Human interactive proof service
US7533419B2 · kind B2 · utility
14Cited by
2References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2004 |
| Grant date | May 12, 2009 |
| Priority date | — |
| Expiry date | Jan 6, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2119
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A human interactive proof (HIP) service is described. In response to a request from a web server, the HIP service generates a HIP challenge and an associated attestation. The web server can then embed the generated HIP challenge in a requested web page. The attestation is used to determine whether or not a user response to the HIP challenge is correct.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.