Methods and systems for messaging with physical presence and temporal verifications
US9191213B2 · kind B2 · utility
3Cited by
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20Claims
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Assignee
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Key dates
| Filing date | Dec 18, 2013 |
| Grant date | Nov 17, 2015 |
| Priority date | — |
| Expiry date | Dec 18, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W12/63
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system and method for verifying proximity to a computational tag by receiving a first token from a server and transmitting the first token to the computational tag. The computational tag can verify the first token and generate a second token based on the first token where the second token includes a signature of the computational tag. The computational tag can transmit the second token to the mobile device and the mobile device can transmit the second token to the server. The server can verify the second token and allow access to a messaging service based on the verification of the second token.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.