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Portable payment terminals and network for such terminals

  • US 5,387,784 A
  • Filed: 12/07/1993
  • Issued: 02/07/1995
  • Est. Priority Date: 10/30/1990
  • Status: Expired due to Term
First Claim
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1. A point-of-transaction system for processing electronic payment of a transaction, comprising:

  • (a) a plurality of electronic payment media, each unique to an individual customer;

    (b) at least one portable payment terminal, each includingmeans for identifying a payment medium presented by a customer to a respective terminal,means for manually entering data relating to the transaction, andmeans for generating and for broadcasting by wireless communication a payment authorization request signal during the transaction;

    (c) a central station remote from, and in wireless communication with, each terminal; and

    (d) a processing center remote from, and in communication with, the central station, said center includingmeans for validating during the transaction the authorization request signal transmitted by the respective terminal via the central station to the center, andmeans for communicating during the transaction the validated request signal via the central station to the respective terminal to complete the transaction.

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