US5416306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for comparing and verifying security codes at point of sale
Assignee: Individual
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Filing: 1994-08-25
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Granted: 1995-05-16
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Expires: 2014-08-25
Abstract
Abstract The present invention provides a method to prevent a fraudulent use of a credit card, a security pass card and the like. A computer system containing card account numbers is provided with corresponding security codes. For authorization of credit issuance or a security check, a computer operator feeds the account number to the computer which in turn displays the corresponding security code on a terminal display. The operator verifies that the card bearer has the same security code, thereby verifying that the card bearer is the true card holder.
Inventors
- 👤 Takeo Imahata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:58
CPC Classifications
G; G07; G07F; G07F7/00; G07F7/08; G07F7/10; G06; G06Q; G06Q20/00; G06Q20/30; G06Q20/34; G06Q20/347; G07F7/1025; G07F7/1075
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
122 words
A method of verifying a credit card use, the credit card belonging to a credit card bearer, using a central computer and a terminal having a display connected thereto, comprising the steps of: storing a set of security codes corresponding to a set of account numbers of credit cards in the central computer; transmitting an account number from the terminal to the central computer; transmitting a password assigned to the operator with the account number into the central computer to ensure an authorized operation of the computer; and displaying a security code corresponding to the transmitted account number on the display of the terminal, whereby the operator may compare the security code against a security code provided by the credit card bearer.
Claim 2
Independent Claim
122 words
A method of verifying a credit card use, the credit card belonging to a credit card bearer, using a central computer and a terminal having a display connected thereto, comprising the steps of: storing a set of security codes corresponding to a set of account numbers of credit cards in the central computer; transmitting an account number from the terminal to the central computer; transmitting a password assigned to the operator with the account number into the central computer to ensure an authorized operation of the computer; and displaying a security code corresponding to the transmitted account number on the display of the terminal, whereby the operator may compare the security code against a security code provided by the credit card bearer.
Claim 3
Independent Claim
134 words
A method of verifying a credit card use employing a central computer and a terminal which is connected thereto and has a display, where the credit card belongs to a credit card bearer, and the central computer holds a set of account numbers of credit cards and a set of corresponding security codes comprising the steps of: inputting an account number of a credit card into the central computer to access a corresponding security code for display on the display; entering a password assigned to an operator into the central computer at the time of the inputting of the account number to prevent an unauthorized operation of the computer; and comparing the displayed security code against a security code provided by the credit card bearer to verify the authenticity of the credit card bearer.
Claim 4
Independent Claim
134 words
A method of verifying a credit card use employing a central computer and a terminal which is connected thereto and has a display, where the credit card belongs to a credit card bearer, and the central computer holds a set of account numbers of credit cards and a set of corresponding security codes comprising the steps of: inputting an account number of a credit card into the central computer to access a corresponding security code for display on the display; entering a password assigned to an operator into the central computer at the time of the inputting of the account number to prevent an unauthorized operation of the computer; and comparing the displayed security code against a security code provided by the credit card bearer to verify the authenticity of the credit card bearer.
Claim 5
Independent Claim
146 words
A method of verifying an authenticity of a security card bearer in a computerized security system having a central computer and a terminal having a display connected thereto comprising the steps of: storing a set of security codes corresponding to a set of account data of security cards in the central computer; transmitting a piece of account data of a security card to the central computer; transmitting an identifier assigned to a security personnel into the central computer at the time the account data of the security card is input to ensure an authorized operation of the security system; transmitting a security code corresponding to the account data to the terminal; and displaying the security code on the display, whereby the security code may be compared against a security code furnished by the security card bearer for verification of the authenticity of the security card bearer.
Claim 6
Independent Claim
146 words
A method of verifying an authenticity of a security card bearer in a computerized security system having a central computer and a terminal having a display connected thereto comprising the steps of: storing a set of security codes corresponding to a set of account data of security cards in the central computer; transmitting a piece of account data of a security card to the central computer; transmitting an identifier assigned to a security personnel into the central computer at the time the account data of the security card is input to ensure an authorized operation of the security system; transmitting a security code corresponding to the account data to the terminal; and displaying the security code on the display, whereby the security code may be compared against a security code furnished by the security card bearer for verification of the authenticity of the security card bearer.
Claim 7
Independent Claim
140 words
A method of verifying an authencity of a security card bearer in a computerized security system having a central computer, the central computer having a set of security codes corresponding to a set of card data of security cards, and a terminal having a display attached to the central computer comprising the steps of: inputting a piece of card data of a security card into the central computer; entering an identifier assigned to a security personnel into the central computer when the piece of card data is input to ensure that the security personnel is an authorized personnel; and displaying a security code corresponding to the card data on the display, whereby the security personnel may compare the displayed security code against a security code provided by the security card bearer to verify the authenticity of the security card bearer.
Claim 8
Independent Claim
140 words
A method of verifying an authencity of a security card bearer in a computerized security system having a central computer, the central computer having a set of security codes corresponding to a set of card data of security cards, and a terminal having a display attached to the central computer comprising the steps of: inputting a piece of card data of a security card into the central computer; entering an identifier assigned to a security personnel into the central computer when the piece of card data is input to ensure that the security personnel is an authorized personnel; and displaying a security code corresponding to the card data on the display, whereby the security personnel may compare the displayed security code against a security code provided by the security card bearer to verify the authenticity of the security card bearer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-05-15 | 1998-11-14 | 1999-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-05-15 | 2002-11-14 | 2003-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-05-15 | 2006-11-14 | 2007-05-16 | $7700.00 | Window Closed / Lapsed |