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Group formation using anonymous broadcast information

  • US 8,359,643 B2
  • Filed: 09/18/2008
  • Issued: 01/22/2013
  • Est. Priority Date: 09/18/2008
  • Status: Expired due to Fees
First Claim
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1. A method comprising:

  • receiving, at a trusted service, a first plurality of tokens and corresponding timestamps from a first device, where the first plurality of tokens do not identify a particular device or its user or owner and where the first plurality of tokens were received by the first device from a first plurality of devices;

    receiving, at the trusted service, a second plurality of tokens and corresponding timestamps from a second device, where the second plurality of tokens do not identify a particular device or its user or owner and where the second plurality of tokens were received from a second plurality of devices;

    comparing, at the trusted service, the first plurality of tokens and timestamps to the second plurality of tokens and timestamps;

    based on the comparison, determining, at the trusted service, that the first device and the second device have collected one or more matching tokens at a time, or in a time frame, determined by the timestamps;

    identifying, at the trusted service, users associated with the first device and the second device; and

    creating, at the trusted service, a group for the identified users.

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