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Verifiable electronic journal for a point of sale device and methods for using the same

  • US 6,199,049 B1
  • Filed: 09/30/1998
  • Issued: 03/06/2001
  • Est. Priority Date: 09/30/1998
  • Status: Expired due to Term
First Claim
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1. A method for providing a verifiable electronic journal system for a point of sale device comprising:

  • receiving transaction information related to a plurality of sales transactions;

    storing the transaction information in a random-access memory;

    determining a data signature based on the transaction information contained in the random access memory and a previously determined data signature responsive to a journal update event;

    transferring the transaction information contained in the random-access memory to a first portion of a journal memory separate from the random-access memory responsive to the journal update event; and

    transferring the data signature to a second portion of the journal memory responsive to the journal update event.

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