Antialiasing for picture passwords and other touch displays
US9866549B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 2016 |
| Grant date | Jan 9, 2018 |
| Priority date | — |
| Expiry date | Oct 17, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/20
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Antialiasing for picture passwords and other touch displays is disclosed. In some embodiments a client device for authenticating a user is operable to obtain a sequence of input actions for an image and obtain a partial hash from a Proof of Knowledge (PoK) server where the partial hash is part of a hash used for authentication of the user. The client device is also operable to calculate a hash for the sequence and determine if a part of the hash matches the partial hash. If the part of the hash matches the partial hash, the client device sends a communication to the PoK server to authenticate the user based on the hash for the sequence of the one or more input actions and obtain a response indicating whether the user is authenticated. In this way, sending some hashes to the proof of knowledge server may not be necessary, saving resources.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.