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Electronic key control and management system for vending machines and the like

  • US 20050285716A1
  • Filed: 07/20/2005
  • Published: 12/29/2005
  • Est. Priority Date: 12/27/2001
  • Status: Abandoned Application
First Claim
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1. A method performed by a mobile control device for controlling an operation of a field device:

  • obtaining current location data representing a current location of the field device;

    receiving a device ID from the field device;

    determining, based on the current location data, whether the field device is at a valid location; and

    if the field device is at a valid location, transmitting a control code to the field device for controlling said operation of the field device.

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