EP0517405A2 - Signature verification method - Google Patents
Signature verification method Download PDFInfo
- Publication number
- EP0517405A2 EP0517405A2 EP92304695A EP92304695A EP0517405A2 EP 0517405 A2 EP0517405 A2 EP 0517405A2 EP 92304695 A EP92304695 A EP 92304695A EP 92304695 A EP92304695 A EP 92304695A EP 0517405 A2 EP0517405 A2 EP 0517405A2
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- European Patent Office
- Prior art keywords
- signature
- account number
- file
- block
- database
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F7/00—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus
- G07F7/08—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means
- G07F7/10—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means together with a coded signal, e.g. in the form of personal identification information, like personal identification number [PIN] or biometric data
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/30—Individual registration on entry or exit not involving the use of a pass
- G07C9/32—Individual registration on entry or exit not involving the use of a pass in combination with an identity check
- G07C9/35—Individual registration on entry or exit not involving the use of a pass in combination with an identity check by means of a handwritten signature
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07G—REGISTERING THE RECEIPT OF CASH, VALUABLES, OR TOKENS
- G07G1/00—Cash registers
- G07G1/0018—Constructional details, e.g. of drawer, printing means, input means
Definitions
- This invention relates to a signature verification method suitable for use in verifying signatures at a point of service (POS) work station.
- POS point of service
- the document US-A-4 617 457 discloses a system for cashing documents such as cheques, which utilizes a customer-operated automated teller machine (ATM) in cooperation with equipment at a teller station where a human teller also participates in the evaluation of the document itself.
- ATM automated teller machine
- customer inserts his personal identification card containing his account number, whereafter a PIN (personal identification number) verification procedure is effected.
- PIN personal identification number
- the customer keys in the monetary amount of the cheque to be cashed and feeds the cheque into the ATM.
- MICR data on the cheque is then read to provide the account number of the drawer of the cheque.
- the drawer's account number, account balance and file signature are accessed from disk storage and visually displayed to the teller on a monitor screen.
- the drawee's account number, account balance and file signature are also displayed on the monitor screen, together with a visual image of the cheque.
- the teller then examines the screen and on the basis of a comparison of information on the displayed cheque image and retrieved data, including a signature comparison, permits or refuses the cheque cashing transaction.
- a signature verification method characterized by the steps of: entering an account number into a terminal for a transaction; sending said account number to a database coupled to said terminal; sending a file signature associated with said account number from said database to said terminal; displaying said file signature; effecting a signature operation to provide a current signature; and visually comparing said current signature with said file signature.
- the point of service (POS) work station 12 is part of a system 10, which in a first embodiment includes a point of service (POS) terminal 14, a monitor 16, a printer 18, a signature database 20, a write input apparatus 22, and an optional magnetic stripe reader (MSR) 24.
- POS point of service
- MSR magnetic stripe reader
- the POS terminal 14 is the heart of the system 10. It can be any suitable device of that type, such as a class 7052 terminal with monochrome monitor, marketed by NCR Corporation, Dayton, Ohio. Keyboard 26 may be used to enter account information if there is no magnetic stripe reader 24, or if a card's magnetic stripe is demagnetized or damaged.
- the monitor 16 may also be separate from the POS terminal 14. However, the disclosed monitor 16 is conveniently mounted on the POS terminal 14, within the scan of a clerk.
- Printer 18 will most likely be used for printing customer receipts such as the receipt 28 which is shown as issuing from an aperture in the housing of the printer 18. However, the printer 18 only prints receipts on an as needed basis. Other types of record media could also be generated by the printer 18, if desired, in response to the needs of the system 10. Any suitable printer may be employed, such as the Epson RP265, marketed by Epson America, Inc., Torrance, California.
- the system 10 may also include a magnetic stripe reader (MSR) 24, either in the write input apparatus 22 or in the POS terminal 14, having a slot 30 through which a card bearing magnetic indicia may be swiped so that the data thereon can be inputted by, stored in, and used by the system 10.
- MSR magnetic stripe reader
- the magnetic stripe reader 24, if installed, may be an integral part of either the POS terminal 14 or the write input apparatus 22, or may be a separate device.
- the magnetic stripe reader 16 is shown as part of the POS terminal 14.
- the signature database 20 could be any currently maintained database, controlled by a central processing unit (CPU), which references an account number to a signature.
- CPU central processing unit
- the present invention envisions the use of outside databases currently maintained by financial institutions.
- the write input apparatus 22 captures signatures electronically.
- a system employing a pressure pad digitizer without a display may be used.
- an ordinary pen may be used as a writing instrument for signing directly on a receipt provided on the digitizer.
- this write input apparatus 22 is as shown in block form in phantom lines and employs commercially available components, including a liquid crystal display (LCD) module 32, and a transparent digitizer and controller 34 with associated stylus 36.
- the write input apparatus 22 includes a transparent surface 38 through which a representation of a receipt may be seen and upon which information may be entered by writing thereon with the stylus 36 by a customer 40.
- the stylus 36 is connected to the apparatus by an electrically conductive line 42.
- the captured signature may be automatically printed on the receipt in the terminal 14.
- the optional LCD display 32 is connected via a path 46 to the POS terminal 14.
- the touch screen and controller 34 is connected to the POS terminal 14 by an RS232 data bus 48, and a similar RS232 data bus 52 connects the POS terminal 14 to the signature database 20. If a signature database from an outside source is employed, modems 54 and 56 can be employed in addition to the RS232 data bus 52 to link the POS terminal 14 to the signature database 20.
- the POS terminal 14 may also be connected to other data processing facilities in an establishment in which it is used, such as a STARLAN store network.
- a first embodiment of the signature verification method 60 is shown, starting with the start block 62.
- the POS terminal 14 queries the write input apparatus 22 to see if any signature data is available. If no data is available, the query continues indefinitely until signature data is available.
- the stylus 36 is used to sign a representation of a receipt appearing on the display 32 below the digitizer 34.
- ROC receipt of charge
- signature data After signature data is received, it is reconstructed and displayed, in block 66, on the monitor 16 of the POS terminal 14.
- the account number is entered into the POS terminal 14 either by entering it manually or by swiping a magnetic card containing account information on its magnetic stripe through the magnetic stripe reader 24.
- the POS terminal 14 sends the account number to the signature database 20 where it is received and is used in block 72 to query the database for signature data corresponding to the account number.
- the signature database 20 sends the file signature to the POS terminal 14.
- the file signature is displayed on the monitor 20 below the current signature already displayed back in block 66. The current and file signatures are then visually compared in block 77.
- block 80 if the comparison in block 77 results in the conclusion that the current signature and the file signature are not sufficiently alike, then the transaction is rejected in block 82 and the method 60 returns to block 62. If the current signature is valid, then the transaction is completed by the operator in block 84. The method 60 than returns to block 62.
- the clerk checks the card for a signature in block 74. If no card signature is available, the transaction is rejected in block 82. If a card signature is available, then the clerk must resort to a visual comparison of the card and current signatures in block 78. A valid comparison of the current and card signatures in block 80 leads to the transaction being finalized in block 84. After block 84, the method 60 returns to block 62.
- Fig. 4 a view of the monitor 16 is shown.
- the file signature 86 and the current signature 88 are displayed one over the other for easy letter-by-letter comparison by the clerk.
- FIGs. 5 and 6 there are shown the system 90 and work station 92 to be used in implementing the second embodiment of the method of the present invention.
- Figs. 5 and 6 are identical to Figs. 1 and 2, except the system 10 of Fig. 5 and the work station 12 of Fig. 6 do not include the write input apparatus 22.
- a flow diagram of the second embodiment 93 of the method of the present invention starting with the start block 94.
- the account number is entered into the POS terminal 14 either by entering it manually or by swiping a magnetic card containing account information on its magnetic stripe through the magnetic stripe reader 16.
- the POS terminal 14 sends the account number to the signature database 20 where it is received and is used in block 100 to query the database for signature data corresponding to the account number.
- the signature database 20 sends the file signature to the POS terminal 14. In block 102, the file signature is displayed on the monitor 16.
- block 104 if a card signature is available, the card signature is compared with the file signature in block 106. If the comparison results in the conclusion in block 108 that the file signature and the card signature are not sufficiently alike, then the transaction is rejected in block 110 and the method 93 returns to block 94.
- the card signature is compared with the current signature on a check or receipt in block 114. If the comparison results in the conclusion in block 116 that the current signature is valid, then the transaction is completed by the clerk in block 118. The method 93 then returns to block 94.
- the clerk resorts to checking for a card signature in block 120 and visually comparing the card signature with the current signature in block 114. If there is no card signature or if a comparison between the card and current signatures results in an invalid signature, then the transaction is rejected in block 110. Otherwise, if a comparison of the card and current signatures results in a valid signature, then the transaction is finalized in block 118 and the method 93 returns to block 94.
- Fig. 8 a view of the monitor 20 and magnetic card 119 is shown.
- the file signature 86 and the card signature 87 can be easily compared by placing the card signature under the file signature.
- Both the first and second embodiments of the method of the present invention are envisioned primarily for use in a retail checkout, in which signature verification must be performed contemporaneously with retail transactions.
- the embodiments are designed, however, to be suitable for use in other environments, such as financial environments, as well. It will be appreciated that both embodiments have the advantage that a simple signature from a customer serves both for verification and for payment, and that a signed receipt is produced without requiring an additional signature.
- the method 122 begins at start 124 when a bank customer wishes to enter new or current legal signatures, corresponding to account numbers already on file, into the signature database 20.
- the bank has a write input apparatus 22 which is coupled to one of the bank's financial terminals, which is similar to the POS terminal 14.
- the customer enters an account number either by the magnetic stripe reader 24 or by hand at the keyboard of the bank's financial terminal.
- the a database operator waits for account numbers to be received from the bank's financial terminal over line 52.
- the account number is received by the database operator, it is displayed on a monitor similar to monitor 16.
- the database operator waits for a customer whose account number has been entered to sign his name on a write input apparatus 22 or similar device. After receiving the signature, the operator transmits the account number and signature to the signature database 20 in block 132. In block 134, if more signatures are to be entered for the same account number, the method 122 returns to block 130 to await entry of the signatures into the write input apparatus 22. If no more signatures are to be entered for the same account number, in block 136 the display is cleared to allow a new account number to be entered and the method 122 returns to block 124.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Collating Specific Patterns (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
- Cash Registers Or Receiving Machines (AREA)
Abstract
A signature verification method at a point of service (POS) work station requires only a single signature from a customer for purposes of verification and payment. Also, a signed receipt (22) is produced without requiring an additional signature. A first signature verification method begins by entering an account number by swiping a magnetic card containing the account number through a magnetic stripe reader (24). A POS terminal (14) sends the account number to a database (20). The database (20) sends a file signature associated with the account number from the database to the POS terminal (14). A customer enters a current signature by signing a representation of a receipt in a write input device (22) with a stylus (36). The current and file signatures are displayed one above the other on a monitor (16). Finally, an operator visually compares the current and file signatures. An alternative method visually compares a file signature with a signature on the back of the magnetic card (119), and then compares the card signature with a currently signed signature.
Description
- This invention relates to a signature verification method suitable for use in verifying signatures at a point of service (POS) work station.
- It is current procedure in a retail checkout environment involving card-based transactions, for example, for a retail clerk to be instructed to compare a current signature with a signature on a customer's card. This signature verification method is unreliable because both signatures may be forged and because the method itself may be incorrectly performed, if at all.
- The document US-A-4 617 457 discloses a system for cashing documents such as cheques, which utilizes a customer-operated automated teller machine (ATM) in cooperation with equipment at a teller station where a human teller also participates in the evaluation of the document itself. In a typical operation, customer inserts his personal identification card containing his account number, whereafter a PIN (personal identification number) verification procedure is effected. The customer then keys in the monetary amount of the cheque to be cashed and feeds the cheque into the ATM. MICR data on the cheque is then read to provide the account number of the drawer of the cheque. The drawer's account number, account balance and file signature are accessed from disk storage and visually displayed to the teller on a monitor screen. The drawee's account number, account balance and file signature are also displayed on the monitor screen, together with a visual image of the cheque. The teller then examines the screen and on the basis of a comparison of information on the displayed cheque image and retrieved data, including a signature comparison, permits or refuses the cheque cashing transaction.
- It is an object of the present invention to provide a reliable signature verification method which is suitable for use in a retail transaction environment.
- Therefore according to the present invention there is provided a signature verification method, characterized by the steps of: entering an account number into a terminal for a transaction; sending said account number to a database coupled to said terminal; sending a file signature associated with said account number from said database to said terminal; displaying said file signature; effecting a signature operation to provide a current signature; and visually comparing said current signature with said file signature.
- It will be appreciated that in a signature verification method according to the invention, high reliability is achievable in a retail transaction, since a currently entered signature is visually compared with a file signature derived from a database, thereby reducing the likelihood of a fraudulent signature-based transaction being accepted.
- Two embodiments of the present invention will now be described by way of example, with reference to the accompanying drawings, in which:-
- Fig. 1 is a block diagram of a system used in implementing a first embodiment of the method of the present invention;
- Fig. 2 is a perspective view of a POS work station which is part of the system of Fig. 1;
- Fig. 3 is a flow diagram of a first embodiment of the method of the present invention;
- Fig. 4 is a view showing current and file signatures in accordance with a first embodiment of the present invention;
- Fig. 5 is a block diagram of a system used in implementing a second embodiment of the method of the present invention;
- Fig. 6 is a perspective view of a POS work station which is part of the system of Fig. 5;
- Fig. 7 is a flow diagram of a second embodiment of the method of the present invention;
- Fig. 8 is a view showing file and magnetic card signatures in accordance with a second embodiment of the present invention; and
- Fig. 9 is a flow diagram of a method for entering signatures into a signature database.
- Turning now to Figs. 1 and 2, the point of service (POS)
work station 12 is part of asystem 10, which in a first embodiment includes a point of service (POS)terminal 14, amonitor 16, aprinter 18, asignature database 20, awrite input apparatus 22, and an optional magnetic stripe reader (MSR) 24. - The
POS terminal 14 is the heart of thesystem 10. It can be any suitable device of that type, such as a class 7052 terminal with monochrome monitor, marketed by NCR Corporation, Dayton, Ohio.Keyboard 26 may be used to enter account information if there is nomagnetic stripe reader 24, or if a card's magnetic stripe is demagnetized or damaged. - The
monitor 16 may also be separate from thePOS terminal 14. However, the disclosedmonitor 16 is conveniently mounted on thePOS terminal 14, within the scan of a clerk. -
Printer 18 will most likely be used for printing customer receipts such as thereceipt 28 which is shown as issuing from an aperture in the housing of theprinter 18. However, theprinter 18 only prints receipts on an as needed basis. Other types of record media could also be generated by theprinter 18, if desired, in response to the needs of thesystem 10. Any suitable printer may be employed, such as the Epson RP265, marketed by Epson America, Inc., Torrance, California. - The
system 10 may also include a magnetic stripe reader (MSR) 24, either in thewrite input apparatus 22 or in thePOS terminal 14, having aslot 30 through which a card bearing magnetic indicia may be swiped so that the data thereon can be inputted by, stored in, and used by thesystem 10. Themagnetic stripe reader 24, if installed, may be an integral part of either thePOS terminal 14 or thewrite input apparatus 22, or may be a separate device. Here, themagnetic stripe reader 16 is shown as part of thePOS terminal 14. - The
signature database 20 could be any currently maintained database, controlled by a central processing unit (CPU), which references an account number to a signature. The present invention envisions the use of outside databases currently maintained by financial institutions. - The
write input apparatus 22 captures signatures electronically. A system employing a pressure pad digitizer without a display may be used. In such a case, an ordinary pen may be used as a writing instrument for signing directly on a receipt provided on the digitizer. - In the preferred embodiment, however, this
write input apparatus 22 is as shown in block form in phantom lines and employs commercially available components, including a liquid crystal display (LCD)module 32, and a transparent digitizer andcontroller 34 with associatedstylus 36. Thewrite input apparatus 22 includes atransparent surface 38 through which a representation of a receipt may be seen and upon which information may be entered by writing thereon with thestylus 36 by acustomer 40. Thestylus 36 is connected to the apparatus by an electricallyconductive line 42. The captured signature may be automatically printed on the receipt in the terminal 14. - System connections are straightforward. The
optional LCD display 32 is connected via apath 46 to thePOS terminal 14. The touch screen andcontroller 34 is connected to thePOS terminal 14 by anRS232 data bus 48, and a similarRS232 data bus 52 connects thePOS terminal 14 to thesignature database 20. If a signature database from an outside source is employed, modems 54 and 56 can be employed in addition to theRS232 data bus 52 to link thePOS terminal 14 to thesignature database 20. ThePOS terminal 14 may also be connected to other data processing facilities in an establishment in which it is used, such as a STARLAN store network. - Referring now to Fig. 3, a first embodiment of the
signature verification method 60 is shown, starting with thestart block 62. Inblock 64, thePOS terminal 14 queries thewrite input apparatus 22 to see if any signature data is available. If no data is available, the query continues indefinitely until signature data is available. To enter signature data, thestylus 36 is used to sign a representation of a receipt appearing on thedisplay 32 below thedigitizer 34. - Advantageously, only one signature is required for transfer of funds and signature verification. Furthermore, signature entry produces a receipt without requiring an additional signature. Only one piece of paper, a receipt, is produced by the
printer 18, and only as needed. In a retail checkout environment, the debit/ credit funds transfer would be payment and the receipt would be a receipt of charge (ROC). - After signature data is received, it is reconstructed and displayed, in
block 66, on themonitor 16 of thePOS terminal 14. Inblock 68, the account number is entered into thePOS terminal 14 either by entering it manually or by swiping a magnetic card containing account information on its magnetic stripe through themagnetic stripe reader 24. Inblock 70, thePOS terminal 14 sends the account number to thesignature database 20 where it is received and is used in block 72 to query the database for signature data corresponding to the account number. - If the account number is on file in the
signature database 20, thesignature database 20 sends the file signature to thePOS terminal 14. Inblock 76, the file signature is displayed on themonitor 20 below the current signature already displayed back inblock 66. The current and file signatures are then visually compared inblock 77. - In
block 80, if the comparison inblock 77 results in the conclusion that the current signature and the file signature are not sufficiently alike, then the transaction is rejected inblock 82 and themethod 60 returns toblock 62. If the current signature is valid, then the transaction is completed by the operator inblock 84. Themethod 60 than returns to block 62. - If the account number is not on file in block 72, then the clerk checks the card for a signature in block 74. If no card signature is available, the transaction is rejected in
block 82. If a card signature is available, then the clerk must resort to a visual comparison of the card and current signatures inblock 78. A valid comparison of the current and card signatures inblock 80 leads to the transaction being finalized inblock 84. Afterblock 84, themethod 60 returns to block 62. - Turning now to Fig. 4, a view of the
monitor 16 is shown. Advantageously, thefile signature 86 and thecurrent signature 88 are displayed one over the other for easy letter-by-letter comparison by the clerk. - Turning now to Figs. 5 and 6, there are shown the
system 90 and work station 92 to be used in implementing the second embodiment of the method of the present invention. Figs. 5 and 6 are identical to Figs. 1 and 2, except thesystem 10 of Fig. 5 and thework station 12 of Fig. 6 do not include thewrite input apparatus 22. - Referring now to Fig. 7, there is shown a flow diagram of the
second embodiment 93 of the method of the present invention, starting with thestart block 94. Inblock 96, the account number is entered into thePOS terminal 14 either by entering it manually or by swiping a magnetic card containing account information on its magnetic stripe through themagnetic stripe reader 16. Inblock 98, thePOS terminal 14 sends the account number to thesignature database 20 where it is received and is used inblock 100 to query the database for signature data corresponding to the account number. - If the account number is on file in the
signature database 20, thesignature database 20 sends the file signature to thePOS terminal 14. Inblock 102, the file signature is displayed on themonitor 16. - In
block 104, if a card signature is available, the card signature is compared with the file signature inblock 106. If the comparison results in the conclusion inblock 108 that the file signature and the card signature are not sufficiently alike, then the transaction is rejected inblock 110 and themethod 93 returns to block 94. - If the card signature is valid, then the card signature is compared with the current signature on a check or receipt in
block 114. If the comparison results in the conclusion inblock 116 that the current signature is valid, then the transaction is completed by the clerk inblock 118. Themethod 93 then returns to block 94. - If the account number is not on file in
block 100, then the clerk resorts to checking for a card signature inblock 120 and visually comparing the card signature with the current signature inblock 114. If there is no card signature or if a comparison between the card and current signatures results in an invalid signature, then the transaction is rejected inblock 110. Otherwise, if a comparison of the card and current signatures results in a valid signature, then the transaction is finalized inblock 118 and themethod 93 returns to block 94. - Turning now to Fig. 8, a view of the
monitor 20 andmagnetic card 119 is shown. Advantageously, thefile signature 86 and thecard signature 87 can be easily compared by placing the card signature under the file signature. - Both the first and second embodiments of the method of the present invention are envisioned primarily for use in a retail checkout, in which signature verification must be performed contemporaneously with retail transactions. The embodiments are designed, however, to be suitable for use in other environments, such as financial environments, as well. It will be appreciated that both embodiments have the advantage that a simple signature from a customer serves both for verification and for payment, and that a signed receipt is produced without requiring an additional signature.
- Turning now to Fig. 9, there is shown a flow diagram illustrating a
method 122 for entering signatures in asignature database 20, such as a database to be maintained by a financial institution. It is envisioned that signatures be captured and stored in the database by using thewrite input apparatus 22. Signatures may be entered manually or automatically, without a database operator. - The
method 122 begins atstart 124 when a bank customer wishes to enter new or current legal signatures, corresponding to account numbers already on file, into thesignature database 20. The bank has awrite input apparatus 22 which is coupled to one of the bank's financial terminals, which is similar to thePOS terminal 14. In connection with the transaction, the customer enters an account number either by themagnetic stripe reader 24 or by hand at the keyboard of the bank's financial terminal. Inblock 126, the a database operator waits for account numbers to be received from the bank's financial terminal overline 52. Inblock 128, after the account number is received by the database operator, it is displayed on a monitor similar to monitor 16. - In
block 130, the database operator waits for a customer whose account number has been entered to sign his name on awrite input apparatus 22 or similar device. After receiving the signature, the operator transmits the account number and signature to thesignature database 20 inblock 132. Inblock 134, if more signatures are to be entered for the same account number, themethod 122 returns to block 130 to await entry of the signatures into thewrite input apparatus 22. If no more signatures are to be entered for the same account number, inblock 136 the display is cleared to allow a new account number to be entered and themethod 122 returns to block 124.
Claims (9)
- A signature verification method, characterized by the steps of: entering an account number into a terminal (14) for a transaction; sending said account number to a database (20) coupled to said terminal (14); sending a file signature associated with said account number from said database (20) to said terminal (14); displaying said file signature; effecting a signature operation to provide a current signature; and visually comparing said current signature with said file signature.
- A method according to claim 1, characterized in that said step of entering an account number includes reading said account number from a card having said account number stored thereon.
- A method according to claim 1, characterized in that said step of entering an account number includes keying said account number into a keyboard (26) associated with said terminal (14).
- A method according to any one of the preceding claims, characterized in that said step of effecting a signature operation includes applying a signature to a representation of a record member on a write input apparatus (22).
- A method according to claim 4, characterized by the step of reproducing the signature entered in said write input apparatus (22) on a receipt (28).
- A method according to any one of claims 1 to 3, characterized in that said step of effecting a signature operation includes writing a signature on a receipt overlying a pressure pad digitizer.
- A method according to any one of the preceding claims, characterized in that said step of visually comparing includes displaying said current signature and said file signature on a display monitor (16) associated with said terminal (14).
- A method according to any one of claims 1 to 3 characterized in that said step of effecting a signature operation includes signing a current signature on a record member, and in that said step of visually comparing said current signature with said file signature includes the steps of visually comparing said file signature with a signature on a card (119) and visually comparing said current signature with said signature on said card (119).
- A method according to any one of the preceding claims, characterized in that said transaction is a retail transaction.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US70754591A | 1991-05-30 | 1991-05-30 | |
US707545 | 1991-05-30 |
Publications (1)
Publication Number | Publication Date |
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EP0517405A2 true EP0517405A2 (en) | 1992-12-09 |
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ID=24842143
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP92304695A Withdrawn EP0517405A2 (en) | 1991-05-30 | 1992-05-22 | Signature verification method |
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EP (1) | EP0517405A2 (en) |
JP (1) | JPH05181957A (en) |
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WO1996007150A1 (en) * | 1994-08-29 | 1996-03-07 | Securecard Technology Ltd. | A method and apparatus for verifying a transaction |
WO2002011039A2 (en) * | 2000-07-31 | 2002-02-07 | @Pos.Com, Inc. | An interactive pos transaction system |
GB2372961A (en) * | 2001-01-06 | 2002-09-11 | Richard Gerald Enston | Card security system |
WO2004036485A1 (en) * | 2002-10-16 | 2004-04-29 | Carlos Morales Urquiza | Mobile or fixed laser apparatus comprising a scanner, which is used to differentiate between and encode the graphological characteristics of a signature |
EP0811958A3 (en) * | 1996-06-05 | 2004-09-29 | NCR International, Inc. | Self-service checkout apparatus and methods |
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