Method and system for providing controlled access to information stored on a portable recording medium

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The Pitney Bowes Inc. patent solves the following problem:

The subject invention relates to a method and apparatus for storing information and controlling access to information. Particularly, it relates to a method and apparatus for safely storing information on a sensitive nature, such as medical histories, and access control information to limit access to people or organizations that authorized access.

Our analysis of this patent is as follows:

Pitney Bowes Inc.’s patent US 6131090 A deals with Method and system for providing controlled access to information stored on a portable recording medium.
A method and system to provide controlled access to information stored on a smartcard. The system includes a data processing center maintained by a trusted third party for storing a database of authorizations for various service providers with access to information about individuals, and for to respond to the request by the service providers for access from the terminals to communicate with the data processing center and smartcards hide information to people. The information stored in the smartcard in encrypted form and the data processing center provides an access code, which includes a key for decrypting the information, only the service providers who are authorized to access the information. The service provider then sends the access code on the smartcard which verifies the access code and decrypts and outputs the requested information. smartcard then calculate a new key as a function of the information unique to each session access and use the new key to encrypt the information, and then erases the new key. The data processing center to calculate the new keys as the data processing center will provide an access code including the new key for the next request for access.

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