Multi-step challenge-response test
US8528054B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 31, 2010 |
| Grant date | Sep 3, 2013 |
| Priority date | — |
| Expiry date | May 17, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2103
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of obtaining access to an Internet service using a multi-step challenge response test is presented. The method calculates a threshold probability for access to the Internet service and generates a number of challenge-response tests. Each of the challenge-response tests is rendered on a display of a client device. An input corresponding to the response to one of the challenge-response tests is received and an authentication probability is calculated after each response. The authentication probability is evaluated after each response and if the authentication probability is higher than the threshold probability access to the Internet service is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.