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System and Method for Preventing Multiple Online Purchases

  • US 20100332267A1
  • Filed: 06/02/2010
  • Published: 12/30/2010
  • Est. Priority Date: 06/24/2009
  • Status: Active Grant
First Claim
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1. A method for preventing redundant purchases of limited items, the method comprising:

  • providing a commerce client to a user;

    receiving (a) financial information of the user and (b) a device identifier from a device the user is using to run the commerce client, the device identifier being based on one or more of a user-configurable parameter and a non-user-configurable parameter of the user device;

    determining whether a previous transaction has been made with the device associated with the received device identifier; and

    disallowing the device from executing further transactions for a predetermined period of time.

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