Client-side CAPTCHA ceremony for user verification
US8145914B2 · kind B2 · utility
47Cited by
8References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 15, 2005 |
| Grant date | Mar 27, 2012 |
| Priority date | — |
| Expiry date | Jan 4, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2463/101
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A facility for performing a local human verification ceremony to obtain user verification is provided. Upon determining that user verification is needed to perform an action on a computer system, the facility presents a CAPTCHA challenge requesting verification that the user wants the action performed on the computer system. Upon receiving a response, the facility compares the received response to an expected correct response. If the received response is the correct response, the facility authorizes the action to be performed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.