JP4841409B2 - User authentication system - Google Patents

Description

  The present invention relates to a user authentication system, and more particularly to a user authentication system that can output image data registered by a user according to fingerprint authentication.

There is known an authentication system that performs user authentication by reading a user's fingerprint, performs various processes according to the authentication result, and enables a specific function.
For example, Patent Document 1 includes a computer, an input device, and a fingerprint database. The input device includes a keyboard, a fingerprint sensor integrated with the keyboard, a display device, and an adapter circuit. A personal authentication system is disclosed in which processing such as logon processing and data encryption processing is performed only when the fingerprint information in the database matches.
Japanese Patent Laid-Open No. 11-175478

For example, there is a general need for storing various document image data such as document documents of various formats prepared in advance and calling and using the document image data as necessary. In response to such needs, it is a common practice to store document image data such as documents used by the user himself / herself in a device such as a personal computer used by the user.
On the other hand, for example, in an image forming apparatus used by a large number of unspecified users such as copying machines, if such personal document image data is stored, the user arbitrarily stores the image data. This is convenient because it can be called and printed out by the image forming apparatus. However, in such a case, since the information stored by a specific individual can be seen by other users for use by an unspecified number of users, it becomes a security problem.

When editing document image data such as documents, for example, by combining seal image data with document image data, data such as documents that require a seal can be generated only by image processing and printed. By simply doing so, it is possible to obtain a printed matter to which a necessary stamp image has been added. Even in such a case, in a system used by an unspecified large number, it is necessary to ensure security for seal image data related to a specific individual.
Moreover, even when managing and using seal data of an unspecified number of people, it is necessary to select specific seal image data desired by the user from a vast amount of seal data, and the work is complicated and takes time. Also occurs.

When managing personal information by using an authentication system such as the above-mentioned Patent Document 1, with the technology of Patent Document 1, once authentication is successful and the user logs on to the system, information on other people is also stored. The problem arises that it is easy to see.
Further, Patent Document 1 does not disclose any idea that makes it possible to combine various document image data and seal image data as described above.

  The present invention has been made in view of the above circumstances, and according to fingerprint authentication, by displaying a list of document image data stored in advance by the user, the security of the document image data can be ensured. It is another object of the present invention to provide a user authentication system capable of easily and reliably executing a process of selecting displayed document image data and combining seal image data.

In order to solve the above problems, a first technical means of the present invention includes a fingerprint detection means for detecting a user's fingerprint, a fingerprint information storage means for storing the user's fingerprint information, and a document associated with the fingerprint information. Document image data storage means for storing image data, authentication means for authenticating a user by collating fingerprint information detected by the fingerprint detection means with fingerprint information stored by the fingerprint information storage means, and document image data Display means for displaying, and as a result of authentication by the authentication means, when it is determined that fingerprint information that matches the fingerprint detected by the fingerprint detection means is stored in the fingerprint information storage means, it is associated with the matched fingerprint information image data document image data stored in the storage means a Ruyu chromatography the authentication system be displayed on the display unit in the list, seal image of the user in association with the fingerprint information Te A seal image data storage means for storing data, and when specific document image data is selected from a list of document image data displayed on the display means according to an operation input to the user authentication system, the selected document image data Is displayed on the display means, and the seal image data associated with the detected fingerprint information is displayed as a list on the display means. The seal image data list is associated with the name of the seal image data and the name of the seal image data. It is characterized by being displayed .

The second technical means is a list of seal image data when the first technical means selects specific seal image data from the list of seal image data displayed on the display means in accordance with an operation input to the user authentication system. The image processing unit includes an image composition unit that synthesizes the seal image data selected from the document image data, and displays the image synthesized by the image composition unit on the display unit.

The third technical means includes synthetic position designation means for designating a position at which the seal image data is synthesized with the document image data in accordance with an operation input to the user authentication system in the second technical means. Is characterized in that, when the seal image data and the document image data are combined, they are combined in accordance with the specification by the combining position specifying means.

According to a fourth technical means, in the second or third technical means, when the image synthesizing means synthesizes the seal image data and the document image data, the size of the area of the document image data to be synthesized with the seal image data is large. Accordingly, the image data is synthesized after changing the size of the seal image data.

According to a fifth technical means, in the third or fourth technical means, the user authentication system includes an image data display device having at least a fingerprint detection means and a display means, and a communication line to the image data display device. And a server device that is capable of transmitting and receiving data to and from the image data display device. The server device is at least one of authentication means, fingerprint information storage means, document image data storage means, and image composition means. It is characterized by having one.

According to the present invention, according to fingerprint authentication, by displaying a list of document image data stored in advance by the user, the security of the document image data can be secured, and the displayed document image data can be selected. The process of synthesizing the seal image data can be executed easily and reliably.
Here, only an authenticated user can display only a list of document image data associated with his / her fingerprint information, and the user can easily select document image data that the user wants to use from this list. .

  In addition, the user's own seal image data is displayed in a list along with the preview display of the document image data, and the user can easily select the seal image data that the user wants to use from the list. Further, the selected document image data and the seal stamp can be selected. Image data synthesized with the image data can be obtained. As a result, it is possible to create document image data such as a document desired by the user with a simple operation while ensuring security.

Further, according to the present invention, by changing the size of the seal image data in accordance with the document image data, it is possible to execute an optimum combining process with the document image data regardless of the size of the seal image data.
Further, according to the present invention, by separating the user authentication system via the communication line, information such as document image data and seal image data can be shared and used by using a plurality of systems connected to the communication line. It becomes possible to do.

FIG. 1 is a block diagram for explaining an embodiment of a user authentication system according to the present invention. The user authentication system 10 according to the present embodiment operates in a state of being incorporated in an image forming apparatus having a scanner function and an image forming function, for example.
The user authentication system 10 of this example includes a fingerprint detection sensor 11 that detects a user's fingerprint, a liquid crystal display panel 12, an operation input unit 13 that can be operated by the user, and a control unit 14 that controls each unit of the system. A fingerprint information storage unit 15 for registering user fingerprint information in advance, a document image data storage unit 16 for storing document image data for use by the user, and a seal image data storage for storing user seal image data Part 17.

  The fingerprint information storage unit 15 is fingerprint information storage means for storing user fingerprint information in advance. A user who uses this user authentication system inputs his / her fingerprint information into the user authentication system 10 in advance and stores it in the fingerprint information storage unit 15. The fingerprint information is used for user authentication. For example, fingerprint information such as a right index finger is input.

  For inputting fingerprint information to the user authentication system 10, the image reading device 20 connected to the user authentication system 10 can be used. Here, the fingerprint is read by the image reading device 20 and the image data is stored and held in the fingerprint information storage unit 15. Alternatively, fingerprint information prepared in advance may be input to the user authentication system 10 from an external device such as a PC (not shown) connected to the user authentication system 10 or a recording medium. Alternatively, fingerprint data read by the fingerprint detection sensor 11 may be used.

The document image data storage unit 16 is document image data storage means for storing document image data used by the user. The document image here is, for example, a template image of a document created by the user, or a blank document image in which only a predetermined framework and essential description items are described. Specifically, it may be a report in a predetermined format used in a company, presentation material, letter, product information, or the like.
The user can create desired image data by using the original image data stored in the original image data storage unit 16 and further editing such as addition and correction.

  The document image data may be image data of a document read by the image reading device 20 as in the case of fingerprint information, or a document image transferred from an external device or recording medium (not shown) connected to the user authentication system 10. Data can be used.

The document image data stored in the document image data storage unit 16 is associated with the user's fingerprint information stored in the fingerprint information storage unit 15. That is, the document image data associated with the fingerprint information can be specified from the specific fingerprint information stored in the fingerprint information storage unit 15.
In this case, identification information (such as an ID) of a specific user is associated with the fingerprint information stored in the fingerprint information storage unit 15, and the document image data stored in the document image data storage unit 16 is the user identification information. You may make it memorize | store in correlation. Thereby, the fingerprint information and the document image data are associated with each other through the specific identification information, and the related document image data can be extracted from the specific fingerprint information.

  The seal image data storage unit 17 is a seal image data storage unit that stores image data of a seal used by the user. Further, when there are a plurality of seals used by one user, a plurality of seal image data can be stored. The seal image data can be stored in the seal image data storage unit 17 by inputting data created in advance by a PC or the like to the user authentication system 10.

The seal image data stored in the seal image data storage unit 17 is associated with the user's fingerprint information stored in the fingerprint information storage unit 15. That is, the seal image data associated with the fingerprint information can be specified from the specific fingerprint information stored in the fingerprint information storage unit 15.
Also in this case, the identification information (ID or the like) of a specific user is associated with the fingerprint information stored in the fingerprint information storage unit 15, and the seal image data stored in the seal image data storage unit 17 is the user identification. The information may be stored in association with the information. Thereby, the fingerprint information and the seal image data are associated with each other through the specific identification information, and the related seal image data can be extracted from the specific fingerprint information.

  The fingerprint detection sensor 11 is a fingerprint detection unit that outputs a detection signal when a user's finger is placed in a detection area of the fingerprint detection sensor 11. The detection method of the fingerprint detection sensor 11 is not specifically limited, and a known method can be appropriately applied. For example, as the fingerprint detection sensor 11, an optical, electrostatic capacitance, or heat conduction detection sensor can be applied.

For example, an optical fingerprint detection sensor irradiates light on the surface of a transparent block such as a glass plate or prism, and irradiates the surface of the block with a fingerprint pattern generated on the surface of the transparent block. An image is formed on an image pickup device such as a CCD by a lens.
The electrostatic capacitance type fingerprint detection sensor detects an electrostatic capacitance difference due to a distance difference between the concave portion and the convex portion of the fingerprint, and detects an uneven pattern of the fingerprint based on the electrostatic capacitance difference. Alternatively, the heat conduction type fingerprint detection sensor detects the uneven pattern of the fingerprint based on the difference in heat transfer characteristics between the concave portion and the convex portion of the fingerprint.

  The user authentication system 10 is further provided with an operation input unit 13 that enables a user's operation input. A touch panel installed on the surface of the liquid crystal display panel 12 can be applied as the operation input unit 13. In addition, it may be a hard key group provided on an operation panel or the like, or another pointing device.

  The user authentication system 10 according to the present embodiment enables input of document image data output from the image reading device 20 by a scanner, and also has a function of outputting document image data, edited image data, and the like to the image forming apparatus 30. I have. Further, an interface for outputting document image data or edited document image data to an external device (not shown) such as a PC may be provided.

  The control unit 14 controls each unit of the user authentication system 10 and includes a memory and a processor such as a CPU. The memory stores programs for realizing each unit and function related to the present invention. The program cooperates with the hardware of the user authentication system to perform various processes related to the present invention, that is, fingerprint information recording process, document image data storage process, seal image data storage process, fingerprint detection / Authentication processing, document image data list display and preview processing, seal image data list display processing, document image data and seal image data composition processing, composition position designation processing, composite image data preview and output processing, etc. Is done.

In the user authentication system 10 having the above configuration, when the fingerprint information is output from the fingerprint detection sensor 11, the control unit 14 detects the detected fingerprint information and the fingerprint information stored in the fingerprint information storage unit 15. And the detected fingerprint information is authenticated.
Here, the fingerprint information detected by the fingerprint detection sensor 11 and the fingerprint information stored in the fingerprint information storage unit 15 are compared and collated to determine whether the fingerprint information storage unit 15 has fingerprint information that matches the detected fingerprint information. To do. Whether the fingerprint information matches can be determined by, for example, pattern comparison of fingerprint information.

If the fingerprint information that matches the fingerprint information detected by the fingerprint detection sensor 11 is stored in the fingerprint information storage unit 15, the control unit 14 determines that the authentication has been successful and is associated with the fingerprint information. Document image data is extracted from the document image data storage unit 16.
At this time, the control unit 14 first extracts only information such as the file name, date, and user name given to the document image data, and displays them on the liquid crystal display panel 12 as display means in a list. I do.

  FIG. 2 is a diagram illustrating an example of a display screen for a document image data list. If the authentication of the fingerprint information is successful, the list display screen 100 is displayed on the liquid crystal panel 12. At this time, the file name 101, the user name 102, and the date 103 of the document image data are set on the list display screen 100, and the document image data is displayed as a list.

  The list of document image data to be displayed is a list relating to document image data stored in association with fingerprint information detected by the fingerprint detection sensor 11 as described above. That is, document image data that can be browsed and used only by a specific individual is displayed in a list. Here, the display screen 100 displays a caption 105 such as “Yamada Taro-san's file list. Please select the file you want to edit”.

  A user who has successfully authenticated and displayed a list of document image data as described above can select desired document image data from the list. The selection of document image data can be executed by the operation input unit 13 such as a touch panel installed on the surface of the liquid crystal display panel 12. If the list cannot be displayed on the list display screen 100, the list can be appropriately scrolled by operating the scroll key 104.

  FIG. 3 is a diagram showing an example of a preview display screen for document image data and seal image data. When the user-desired document image data is selected on the document image data list display screen 100 as shown in FIG. 2, the control unit 14 stores the document image data corresponding to the selected list in the document image data storage unit. 16 is extracted and displayed as a preview. For example, as shown in FIG. 3, a preview 120 of document image data selected by the user is displayed on the display screen 110 of the liquid crystal display panel 12.

  In the preview 120, the original image data 121 is displayed, and the seal stamp synthesizing unit 122 which is an area where the seal image data is to be combined is set. The position information of the seal stamp synthesizing unit 122 may be added to the document image data in advance, or may be arbitrarily designated by the user using the operation input unit 13. In addition, some image patterns to be combined with the seal stamp may be held by the user authentication system 10 so that the position of the seal stamp combining unit 122 is automatically determined from the document image data.

  At this time, the control unit 14 of the user authentication system 10 extracts the seal image data stored in association with the fingerprint information of the successfully authenticated user from the seal image data storage unit 17 and causes the display screen 110 to display the seal image data. . The display screen 110 displays a list 130 of seal image data together with a preview 120 of document image data selected by the user. At this time, if there are a plurality of corresponding seal image data, all the seal image data are displayed, and if there is only one, the seal image data is displayed.

In the seal image data list 130, the name 131 of the seal image data and the image 132 of the seal stamp are displayed in association with each other. The types of the seal image data name 131 include, for example, “approval seal”, “verification stamp”, “correction seal”, and the like, and the user stores the plurality of types of seal image data in advance as the seal image data. It can be stored in the storage unit 17.
The user can arbitrarily select the seal image data to be combined with the document image data 121 from the seal image data list 130 by operating the operation input unit 13.

In this case, the user can also newly read the original image data on the spot and display the preview without using the original image data stored in advance.
In this case, the user authentication system 10 enables an input operation for reading new document image data after successful authentication. When reading new document image data, the user authentication system 10 reads the document by the image reading device 20 to acquire document image data, displays the acquired document image data as a preview, and displays it in the document image data storage unit 16. Remember.

  FIG. 4 is a diagram illustrating an example of a composite image preview display screen obtained by combining document image data and seal image data. When the seal image data is selected on the display screen 110 in FIG. 3, the control unit 14 combines the selected seal image data with the document image data 121 displayed as a preview, and displays the composite image on the liquid crystal display panel 12. The preview 140 is displayed. Here, the composite image data 141 is displayed, and the selected seal image data is combined with the seal combination unit 122 of the composite image data 141.

At this time, the control unit 14 may perform a process of changing the size of the seal image data in accordance with the size of the region of the seal composition unit 122.
As described above, the position information of the seal stamp synthesizing unit 122 is added to the document image data in advance, is specified by a user operation, or is automatically recognized from the document image data. The control unit 14 performs a scaling process on the seal image data as necessary to synthesize the original image data so that the seal image fits optimally in the region of the seal composition unit 122.

  A user who has confirmed the composite image data obtained in this way in the preview 140 can transfer the composite image data to the image forming apparatus 30 and print it out. Alternatively, the composite image data can be transferred to an external device such as a PC, and further image processing can be performed by the PC, or printing output can be performed by a desired printer via the PC. Alternatively, the composite image data may be transmitted by mail or facsimile transmission.

FIG. 5 is a flowchart showing an example of processing in the user authentication system according to the present invention.
First, the seal composition function in the user authentication system is selected (step S1). For example, the user authentication system includes a seal composition mode for executing a seal composition function for document image data as described above, and the user can arbitrarily select this mode. The user can select the seal composition function by a predetermined operation on the operation input unit 13 and shift the user authentication system 10 to the seal composition mode.

  Then, the user places a finger at a predetermined detection position of the fingerprint detection sensor 11 and causes the fingerprint detection sensor 11 to detect the fingerprint (step S2). The control unit 14 of the user authentication system 10 collates the fingerprint information detected by the fingerprint detection sensor 11 with the fingerprint information stored in the fingerprint information storage unit 15 (step S3), and determines whether the user is a registered user. Authentication is performed (step S4).

  If authentication is unsuccessful and it is determined that the user is not a registered user, the document image data and seal image data associated with the user cannot be presented, and the seal composition mode processing is terminated. If the authentication is successful and it is determined that the user is a registered user, the control unit 14 extracts document image data associated with the fingerprint information of the user from the document image data storage unit 16 and displays the list (see FIG. 5). Step S5).

  Then, the user selects document image data to be used (step S6). Here, the user may select document image data from the document image data displayed in a list, or may make a selection for newly reading document image data.

When the already recorded document image data is used (step S7-YES), the control unit 14 extracts the document image data from the document image data storage unit 16 and displays the preview on the liquid crystal display panel 12 (step S7). S8).
On the other hand, when the original image data is newly read (step S7-NO), the original image data is read by the image reading device 20 (step S16), and when the reading is completed (step S17-YES), the reading is performed. The original image data is previewed on the liquid crystal display panel 12 (step S8). The document image data reading process in step S16 may be a process of transferring document image data from an external device or a recording medium without using the image reading device 20.

  Next, the control unit 14 extracts the seal image data associated with the fingerprint information of the user who has been successfully authenticated from the seal image data storage unit 17 and displays it on the liquid crystal display panel 12 as a list (step S9). When the user selects seal image data to be used (step S10), the process proceeds to the following process for combining the seal image data with the document image data.

Here, when the user designates the composite position of the seal image data with respect to the document image data (the seal composite part 122 in FIG. 3) (step S11-YES), the user designates the composite position by the operation input unit 13 (step S11-YES). Step S12). The control unit 14 synthesizes the original image data and the seal image data in accordance with the designation input of the synthesis position (step S13).
On the other hand, when the combination position of the seal image data is not designated, the control unit 14 determines the document image data and the seal image data according to the position information of the seal composition unit specified in advance or the position information of the automatically recognized seal composition unit. Is synthesized (step S13).

Then, the control unit 14 determines whether to print the combined image data (step S14). Whether or not the composite image data can be printed is determined according to a predetermined user operation on the preview display screen of the composite image data. The user can determine whether to execute the printing process after confirming the preview screen of the composite image data.
When printing is performed, the control unit 14 outputs the composite image data to the image forming apparatus 30 and starts the printing process (step S15).

FIG. 6 is a flowchart showing another example of processing in the user authentication system according to the present invention. The process of this example shows another example of the process after step S13 in the flowchart of FIG.
The control unit 14 of the user authentication system 10 performs the processes of steps S1 to S13 described in FIG. 5 to generate composite image data, and then determines whether to print the composite image data (step S21). When printing the composite image data, the composite image data is output to the image forming apparatus 30 and the printing process is started (step S22), as in the above process.

  On the other hand, when the printing process is not performed, the control unit 14 determines whether to output the composite image data to another external device (step S23). The other external device is, for example, an externally connected PC or recording device, and includes mail transmission and facsimile transmission to the other external device. These are configured to be appropriately selected by the user according to the function of the user authentication system. The control unit 14 can determine in what manner the composite image data is output in accordance with these user selections.

When outputting the composite image data to the external device, the control unit 14 selects an interface (I / F) according to the output method to the external device (step S24), and outputs the composite image data to the external device. To do.
In this example, it is determined whether or not to output to an external device when printing is not performed. However, the composite image data is printed and the composite image data can be output to another external device. Good.

  FIG. 7 is a view for explaining another embodiment of the user authentication system according to the present invention. In the configuration example of FIG. 1 described above, the user authentication system is configured as an integrated device. However, in this embodiment, each function of the user authentication system configured in FIG. 1 is connected to the server device 60 connected by a communication line. The image data display device 40 is separated. Therefore, also in this embodiment, the same function as the user authentication system of FIG. 1 can be realized.

  The image data display device 40 includes a fingerprint detection sensor 11 that detects a user's fingerprint, a liquid crystal display panel 12, an operation input unit 13 that can be operated by the user, and a control unit 14 that controls each part of the device. Yes. The image reading device 20 is connected to the image data display device 40 so that the read document image data can be input. The image data display device 40 is connected to an image forming device 30 capable of printing out image data.

  The server device 60 is connected to the image data display device 40 via the communication line 51 via the public line network 50. The communication line 51 may be via a network such as a LAN or WAN, or may be a mixture of these and a public line network.

  The server device 60 stores a fingerprint information storage unit 15 for registering user fingerprint information in advance, a document image data storage unit 16 for storing document image data for use by the user, and a user seal image data. And a seal image data storage unit 17.

  When the fingerprint data of the user is detected by the fingerprint detection sensor 11, the image data display device 40 transfers the fingerprint information to the server device 60. The server device 60 performs authentication by comparing the fingerprint information transferred from the image data display device 40 with the fingerprint information stored in its own fingerprint information storage unit 15. If the authentication is successful, the server device 60 associates the fingerprint information with the fingerprint information. The list information of the original document image data is transferred to the image data display device 40.

  In the image data display device 40, a list of document image data transferred from the server device 60 is displayed on the liquid crystal display panel 12. When document image data is selected by the user, the selection information is transmitted to the server device 60. The server device 60 extracts the document image data selected by the user from the document image data storage unit 16, extracts related seal image data from the seal image data storage unit 17, and supplies them to the image data display device 40. Send.

  In the image data display device 40, the document image data and the seal image data are preview-displayed on the liquid crystal display panel 12, and are combined in accordance with a selection operation by the user to generate composite image data. It is also possible to read original image data to be used from the image reading device 20. The generated composite image data can be output to the image forming apparatus 30 for printing or output to another external device.

  As described above, with the configuration of the present embodiment, the same function as the user authentication system shown in FIG. 1 can be realized. According to the present embodiment, since the fingerprint information, the document image data, and the seal image data are held in the server device 60, for example, a plurality of image data display devices 40 connected on the network via the public network 50 are used. This makes it possible to share information. The user can execute user authentication and composite image data generation processing by using any image data display device 40 that can access the server device 60.

  The fingerprint information storage unit 15, the document image data storage unit 16, and the seal image data storage unit 17 are not necessarily provided in the server device 60. The server device 60 includes at least one of these elements. Other elements may be held by the image data display device 40. Further, user authentication based on fingerprint information may be executed on the image data display device 40 side.

It is a block diagram for demonstrating one Embodiment of the user authentication system by this invention. 6 is a diagram illustrating an example of a display screen of a document image data list. FIG. It is a figure which shows an example of the preview display screen of original image data and seal image data. It is a figure which shows an example of the preview display screen of the synthesized image which synthesize | combined original image data and seal image data. It is a flowchart which shows an example of the process in the user authentication system by this invention. It is a flowchart which shows the other example of the process in the user authentication system by this invention. It is a figure for demonstrating other embodiment of the user authentication system by this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... User authentication system, 11 ... Fingerprint detection sensor, 12 ... Liquid crystal display panel, 13 ... Operation input part, 14 ... Control part, 15 ... Fingerprint information storage part, 16 ... Original image data storage part, 17 ... Seal image data storage , 20 ... image reading device, 30 ... image forming device, 40 ... image data display device, 50 ... public line network, 51 ... communication line, 60 ... server device, 100 ... list display screen, 101 ... file name, 102 ... User name, 103 ... Date, 104 ... Scroll key, 105 ... Caption, 110 ... Display screen, 120 ... Preview, 121 ... Original image data, 122 ... Seal synthesis unit, 130 ... Seal image data list, 131 ... Name, 132 ... image, 140 ... preview, 141 ... composite image data.

Claims (5)

Fingerprint detection means for detecting a user's fingerprint;
Fingerprint information storage means for storing user fingerprint information;
Document image data storage means for storing document image data in association with the fingerprint information;
Authentication means for authenticating a user by comparing fingerprint information detected by the fingerprint detection means with fingerprint information stored in the fingerprint information storage means;
Display means for displaying the document image data,
As a result of authentication by the authentication means, when it is determined that fingerprint information matching the fingerprint detected by the fingerprint detection means is stored in the fingerprint information storage means, the image data storage is associated with the matched fingerprint information a Ruyu chromatography the authentication system be displayed on said display means in the original image data stored in the unit list,
Seal image data storage means for storing user seal image data in association with the fingerprint information;
When specific document image data is selected from the list of document image data displayed on the display unit in accordance with an operation input to the user authentication system, the selected document image data is displayed on the display unit, and Displaying the seal image data associated with the detected fingerprint information as a list on the display means;
The list of the seal image data is displayed in association with the seal image data and the name of the seal image data . The user authentication system according to claim 1 ,
When specific seal image data is selected from the list of seal image data displayed on the display means according to an operation input to the user authentication system, the seal image data selected from the list of seal image data is the original document. Having image composition means for compositing with image data;
A user authentication system, wherein an image synthesized by the image synthesizing means is displayed on the display means. The user authentication system according to claim 2 ,
Combining position specifying means for specifying a position at which the seal image data is combined with the document image data in accordance with an operation input to the user authentication system;
The user authentication system, wherein the image synthesizing unit performs the synthesis in accordance with the designation by the synthesis position designation unit when synthesizing the seal image data and the document image data. The user authentication system according to claim 2 or 3 ,
The image synthesizing unit, when synthesizing the seal image data and the document image data, sets the size of the seal image data according to the size of the area of the document image data to be synthesized. A user authentication system which performs the composition after changing. The user authentication system according to claim 3 or 4 ,
The user authentication system includes an image data display device including at least the fingerprint detection unit and the display unit;
A server device connected to the image data display device via a communication line and capable of transmitting and receiving data to and from the image data display device;
The server apparatus includes at least one of the authentication unit, the fingerprint information storage unit, the document image data storage unit, and the image composition unit.

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