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Vending audit system

  • US 7,053,773 B2
  • Filed: 08/06/2002
  • Issued: 05/30/2006
  • Est. Priority Date: 08/07/2001
  • Status: Expired due to Fees
First Claim
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1. A method for tracking inventory in a vending machine comprising:

  • dispensing a vend item from a vending machine, wherein a radio-frequency (RF) tag is attached to the dispensed vend item;

    using a sensor to sense the RF tag attached to the vend item so as to check passage of the dispensed vend item past an exit point; and

    transferring information concerning the vend item to a control circuit, wherein said information includes whether the vend item has successfully exited a product dispenser.

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