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Method and system for processing supplementary product sales at a point-of-sale terminal

  • US 7,587,334 B2
  • Filed: 07/22/2003
  • Issued: 09/08/2009
  • Est. Priority Date: 03/21/1997
  • Status: Expired due to Fees
First Claim
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1. A method implemented by a device, comprising:

  • generating a purchase price of a purchase;

    generating a rounded price;

    calculating a round-up amount;

    the round-up amount being a difference between the purchase price and the rounded price; and

    printing an entry in a lottery in which a prize for winning the lottery is proportional to the round-up amount.

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