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IC card for accumulating degree of interest and system for accumulating degree of interest using such card

  • US 6,283,377 B1
  • Filed: 02/04/1998
  • Issued: 09/04/2001
  • Est. Priority Date: 03/28/1997
  • Status: Expired due to Fees
First Claim
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1. An IC card attached to a commodity for accumulating the degree of shoppers'"'"' interest in the commodity, comprising:

  • a display unit for displaying prescribed commodity information, capable of changing a displayed contrast;

    a sensor for sensing a touch of the shopper and, if the touch is sensed, changing the displayed contrast of said display unit; and

    a counter for counting the number of times said sensor is touched;

    wherein the degree of shoppers'"'"' interest is accumulated as the number of times the shoppers touch said sensor.

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