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Method of maintaining product status with invisibly coded interface

  • US 7,946,485 B2
  • Filed: 07/08/2008
  • Issued: 05/24/2011
  • Est. Priority Date: 04/07/2003
  • Status: Expired due to Fees
First Claim
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1. A method of maintaining a status of a product item, the product item including an associated interface surface, the interface surface having disposed thereon or therein coded data including a plurality of coded data portions, each coded data portion being indicative of an identity of the product item, the method including, in a sensing device:

  • sensing at least one coded data portion;

    generating, using the sensed coded data portion, indicating data indicative of the product item identity; and

    transferring the indicating data to a computer system, the computer system being responsive to the indicating data to update product status information stored in a data store,wherein the coded data is printed using infrared ink so as to be substantially invisible to the unaided eye.

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