| 5259025 |
Method of verifying fake-proof video identification data |
| Nov-2-1993 |
A fake-proof card verification system allows for the reading of data from an EEPROM memory device. A photographic-type image is stored in the memory device. The data comprises a data table containing randomly... |
| 5256863 |
In-store universal control system |
| Oct-26-1993 |
The present invention relates to a system for automating data acquisition and processing at a checkstand point-of-sale in a retail outlet. Preferred embodiments include a first local area network of POS... |
| 5245657 |
Verification method and apparatus |
| Sep-14-1993 |
A prover possessing public information and related secret information sends the public information and an initial message to a verifier. The verifier sends back a random message and an enquiry generated... |
| 5231666 |
Cryptographic method for updating financial records |
| Jul-27-1993 |
A data processing system, method and computer program provide for the secure updating an electronic purse which includes a list of purse records. The method includes the step of defining an authentication... |
| 5195133 |
Apparatus and method for producing a digitized transaction record including an encrypted signature |
| Mar-16-1993 |
A method and system for generating a completed payment document ready for signature in image form. The document is signed by a customer and a copy of the signature is captured in digital form. Thereafter... |
| 5191613 |
Knowledge based system for document authentication |
| Mar-2-1993 |
The document authentication apparatus provides document authentication and authenticity capability. Document authentication requires that the person to be charged apply an authenticating mark on the document... |
| 5163098 |
System for preventing fraudulent use of credit card |
| Nov-10-1992 |
A credit card system uses an encryption algorithm to generate a first encoded text from the card number and a password supplied by the user. The card user is verified by comparison of the first encoded... |
| 5097504 |
Method and device for qualitative saving of digitized data |
| Mar-17-1992 |
An encrypted signature S representative of the information and of the identity of the holder of the information is established by means of a calculation algorithm for the encryption and the compression... |
| 5018196 |
Method for electronic transaction with digital signature |
| May-21-1991 |
A mediation can be requested to a computer connected to a communications network when transacting parties A and B effect an electronic transaction and trouble takes place during the transaction. The transaction... |
| 4962531 |
Transaction system comprising one or more host exchanges and a number of distributed terminal stations |
| Oct-9-1990 |
A transaction system comprises terminal stations which can communicate with a host exchange. In order to improve the communication, concentrators are arranged between the host exchange and the terminal... |
| 4926478 |
Method and apparatus for continuously acknowledged link encrypting |
| May-15-1990 |
An authentication system in which communication between two locations is provided by a continuous full duplex bidirectional communications highway, which highway is a secure link between the two locations.... |
| 4885777 |
Electronic transaction system |
| Dec-5-1989 |
An electronic transaction in which in order to improve a reliability of message certification by digital signature and enable the use of the digital signature in a formal transaction in place of conventional... |
| 4862501 |
Communications network using IC cards |
| Aug-29-1989 |
A communications network has a plurality of customer terminals and a single center terminal which are coupled through communication lines. A large scale integrated circuit is operatively coupled to each... |
| 4816655 |
Method and apparatus for checking the authenticity of individual-linked documents and the identity of the holders thereof |
| Mar-28-1989 |
There is described a method and an apparatus which comprises a reader for reading document characteristics, circuitry permitting the formation of a message confirming the holder identity, a computer connected... |
| 4796297 |
Device for calculating a charge for a charged information signal with errors avoided in a report of the charge |
| Jan-3-1989 |
The amount of money which should be charged upon reception of a pay television signal or a like information signal, is calculated by a charging device comprising a calculator (25) for calculating the amount... |
| 4771460 |
Data processing terminal device which stores a modified decrypted data in a programmable read only memory in order to detect alteration thereof |
| Sep-13-1988 |
A data processing terminal device is on-line connected to a host computer and records on journal paper journal data obtained as a result of communication with the host computer. Data is encrypted, and... |
| 4757543 |
Encrypting and decrypting device which stores an algorithm in a memory |
| Jul-12-1988 |
A data processing terminal device is on-line connected to a host computer and records on journal paper journal data obtained as a result of communication with the host computer. Data is encrypted, and... |
| 4755940 |
Transaction security system |
| Jul-5-1988 |
An electronic funds transfer system (EFT) is described in which retail terminals located in stores are connected through a public switched telecommunication system to card issuing agencies data processing... |
| 4748557 |
Data processing terminal device for storing encrypted journal data and decrypting the data |
| May-31-1988 |
A data processing terminal device is on-line connected to a host computer and records on journal paper journal data obtained as a result of communication with the host computer. Data is encrypted, and... |
| 4745267 |
Fraudulent card intercept system |
| May-17-1988 |
Credit card blanks are manufactured with a plurality of random, secure codes (24) such as randomly applied infrared readable bits. A card encoding apparatus (B) includes a secure code reader (32) for reading... |
| 4578530 |
End-to-end encryption system and method of operation |
| Mar-25-1986 |
An efficient end-to-end encryption system including key management procedures for providing secure, financial data communication between a system user at one of a plurality of transaction terminals of... |
| 4423287 |
End-to-end encryption system and method of operation |
| Dec-27-1983 |
An efficient end-to-end encryption system including key management procedures for providing secure, financial data communication between a system user at one of a plurality of transaction terminals of... |
| 4393269 |
Method and apparatus incorporating a one-way sequence for transaction and identity verification |
| Jul-12-1983 |
A method and apparatus for verifying both the content of a transaction and the identity of the parties thereto. The system includes a plurality of terminals connected together over a common communication... |
| 4326098 |
High security system for electronic signature verification |
| Apr-20-1982 |
The system provides both electronic signature and message verification with a minimum of excess coding information on an instantaneous basis and is easily restartable in a store and forward environment.... |
| 4315101 |
Method and apparatus for securing data transmissions |
| Feb-9-1982 |
A method and apparatus are provided for improving the security of data transmissions between stations and for controlling secured transactions from remote locations in a data-transfer system. The method... |
| 4302810 |
Method and apparatus for secure message transmission for use in electronic funds transfer systems |
| Nov-24-1981 |
An electronic funds transfer system wherein it is required that a bank be reasonably guaranteed that the two parties to a retail transaction (i.e., a person and a retailer) agree on the transaction before... |
| 4283599 |
Method and apparatus for securing data transmissions |
| Aug-11-1981 |
A method and apparatus are provided for improving the security of data transmissions between stations and for controlling secured transactions from remote locations in a data-transfer system. The method... |
| 4268715 |
Method and apparatus for securing data transmissions |
| May-19-1981 |
A method and apparatus are provided for improving the security of data transmissions between stations and for controlling secured transactions from remote locations in a data-transfer system. The method... |
| 4264782 |
Method and apparatus for transaction and identity verification |
| Apr-28-1981 |
A method and apparatus whereby the senders and receivers of messages sent over a transmission system including a Host CPU may guarantee the integrity of the data content of the message and also the absolute... |
| 3990558 |
Method and apparatus for preparing and assessing payment documents |
| Nov-9-1976 |
A method and apparatus is described for preparing and assessing machine readable payment documents such as bank or postal checks to avoid fraud. The checks are prepared by enciphering the serial number... |
