The present invention uses an efficient data compression/decompression scheme using a passive data storage media such as a card-based approach for storage of medical data information. The invention operates...
A record contains a graphic image and an information area which are interrelated to discourage misuse of the record. The information area can overlay the graphic image and include information encoded in...
The invention employs a voluntary identification/definition phase performed, for example, shortly after a computer is purchased, and a secret information retrieval phase. In the definition phase, the true...
A method for deterring fraudulent voting involving use of wallet-size cards having a permanent data storage medium and a temporary data storage medium disposed on each card. A first card writing device...
The method and system of the present invention utilizes public-key cryptography to create "secure" titles for personal and real property such as vehicles and the like. The title preferably comprises a...
Apparatus for recording a transaction where the transaction includes authenticating an identification card; the card having information pertaining to an object or other entity to be identified on a first...
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...
A public key cryptographic system is disclosed with enhanced digital signature certification which authenticates the identity of the public key holder. A hierarchy of nested certifications and signatures...
A data processing system is described which issues value documents e.g. tickets or information under the control of output instructions and is designed to prevent a person attempting fraud using an unauthorized...
