×

Method and apparatus for authorizing the holder of a portable object such as a card to gain access to at least one service provided by at least one authorizing entity

  • US 4,656,342 A
  • Filed: 01/21/1986
  • Issued: 04/07/1987
  • Est. Priority Date: 01/20/1983
  • Status: Expired due to Term
First Claim
Patent Images

1. A method of authorizing the holder of a portable card to gain access with the card to services provided by different authorizing entities, each authorizing entity providing a different service, and the card having data storing means, the method comprising preliminarily defining the different authorizing entities to which the holder of the card can gain access to obtain services;

  • chaining the different authorizing entities in a predetermined order of dependency beginning with a first one of the authorizing entities such that each authorizing entity, except said first one, depends in said predetermined order from at least one other authorizing entity;

    identifying each authorizing entity by an authorizing datum of a predetermined format which includes at least a first datum identifying such authorizing entity and a second datum which identifies the authorizing entity from which such authorizing entity depends in the chained order of dependency; and

    verifying, upon the holder requesting access to services provided by one of said authorizing entities which were previously unauthorized to the holder, that the authorizing datum of the authorizing entity from which the one requested authorizing entity depends has previously been written in the data storing means of the card.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×