06175922 is referenced by 514 patents and cites 9 patents.

A method and apparatus is disclosed for approving a transaction request between an electronic transaction system and a portable electronic authorization device (PEAD) carried by a user using an electronic service authorization token. The method includes the steps of receiving at the PEAD first digital data representing the transaction request. The PEAD provides information to the user regarding an ability to approve the transaction request. When the transaction request is approved by the user, the PEAD receives second digital data representing the electronic service authorization token. In one aspect of the invention, the method and apparatus include a remote agent server that provides a bridge between the electronic transaction system and the PEAD. In yet another aspect of the invention, the method and apparatus are used at a point of sale location. Advantages of the invention include the ability to securely and conveniently perform transactions with a portable device.

Title
Electronic transaction systems and methods therefor
Application Number
9/523825
Publication Number
6175922 (B1)
Application Date
March 13, 2000
Publication Date
January 16, 2001
Inventor
Ynjiun P Wang
Cupertino
CA, US
Agent
Flehr Hohbach Test Albritton & Herbert
US
Assignee
eSign
CA, US
IPC
H06F 11/30
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