Method, apparatus, and system for transferring units of value

  • US 5,805,702 A
  • Filed: 01/31/1996
  • Issued: 09/08/1998
  • Est. Priority Date: 09/29/1995
  • Status: Expired due to Term
First Claim
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1. A method for adding a monetary equivalent to an electronic module, comprising the steps of:

  • a. placing the module in communication with an electronic device;

    b. indicating an amount requested to said electronic device;

    c. communicating a random number from said module to said electronic device;

    d. combining said random number and said amount requested thereby creating a first data packet in said electronic device;

    e. encrypting said first data packet with a first key thereby creating a signed certificate in said electronic device;

    f. communicating said signed certificate from said electronic device to said module;

    g. decrypting said signed certificate in said module with a second key thereby creating a decrypted random number and a decrypted amount requested;

    h. comparing said random number with said decrypted random number and determining if they match in said module; and

    i. adding said decrypted amount requested to a money register in said module.

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