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Publishing location for a limited time

  • US 9,055,403 B2
  • Filed: 03/10/2014
  • Issued: 06/09/2015
  • Est. Priority Date: 04/08/2009
  • Status: Active Grant
First Claim
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1. A user device comprising:

  • an output interface for transmitting data to at least one other user device;

    a user interface configured to receive an instruction to enable periodic location data sharing of location data for the user device for a limited length of time after which location sharing is to be disabled; and

    a location sharing module configured to;

    during the limited length of time, periodically provide location data for the user device to the output interface to be transmitted to the at least one other user device; and

    outside the limited length of time, cease to periodically provide location data for the user device to the output interface;

    wherein the instruction to enable periodic location data sharing of location data for the user device for a limited length of time defines a bounded length of time starting from a time at which the instruction is received; and

    wherein periodically providing location data for the user device to the output interface comprises;

    periodically sending a single message to a relay or router for independent distribution to the at least one other user device without the location data being retained by a server, the single message containing the location data and addresses of the at least one other user device, wherein the user device subsequently receives from the relay or router a delivery acknowledgment when each of the at least one other user device receives the single message.

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