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METHODS AND APPARATUS FOR PROVIDING EQUIPMENT ON A PAY-PER-USE BASIS

  • US 20080147431A1
  • Filed: 01/16/2008
  • Published: 06/19/2008
  • Est. Priority Date: 03/23/2006
  • Status: Abandoned Application
First Claim
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1. A method of providing a treatment device on a pay-per-use basis, the method comprising:

  • delivering the treatment device to a retailer, the treatment device requiring at least one digital key from a plurality of digital keys to be operated, the treatment device being programmed to modify data on the at least one digital key to indicate use of the treatment device;

    delivering a first digital key from the plurality of digital keys to the retailer on a first date, the first digital key storing data indicative of a first duration of authorized use for the treatment device; and

    delivering a second digital key from the plurality of digital keys to the retailer on a second date, the second digital key storing data indicative of a second duration of authorized use for the treatment device, the first digital key being different than the second digital key, the first date being before the second date.

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