Group formation using anonymous broadcast information
First Claim
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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Accused Products
Abstract
A number of devices co-located at a geographic location can broadcast and receive tokens. Tokens can be exchanged using a communication link having limited communication range. Tokens that are received by a device can be stored locally on the device and/or transmitted to a trusted service operating remotely on a network. In some implementations, the tokens can be stored with corresponding timestamps to assist a trusted service in matching or otherwise correlating the tokens with other tokens provided by other devices. The trusted service can perform an analysis on the tokens and timestamps to identify devices that were co-located at the geographic location at or around a contact time which can be defined by the timestamps. A group can be created based on results of the analysis. Users can be identified as members of the group and invited to join the group.
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Citations
23 Claims
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1. A method comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method performed by a device, comprising:
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receiving, at a first device, tokens from a number of devices, where the tokens do not identify a particular device or its user or owner; generating, at the first device, a timestamp for each of the tokens corresponding to when the token was received; sending, from the first device, the tokens and corresponding timestamps to a trusted service; and receiving, from the trusted service, information describing a group of users associated with devices that received matching tokens having similar corresponding timestamps, where the trusted service compares tokens and timestamps received from a plurality of devices to generate the information describing the group of users. - View Dependent Claims (9, 10, 11, 12)
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13. A non-transitory computer-readable medium having instructions stored thereon, which, when executed by a processor, causes the processor to perform operations comprising:
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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. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A non-transitory computer-readable medium having instructions stored thereon, which, when executed by a processor, causes the processor to perform operations comprising:
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receiving, at a first device, tokens from a number of devices, where the tokens do not identify a particular device or its user or owner; sending, from the first device, the tokens and corresponding timestamps to a trusted service; and receiving, from the trusted service, information describing a group of users associated with devices that received matching tokens having similar corresponding timestamps, where the trusted service compares tokens and timestamps received from a plurality of devices to generate the information describing the group of users. - View Dependent Claims (20, 21, 22, 23)
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Specification