System, method, and apparatus for graduated difficulty of human response tests
US8589694B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2009 |
| Grant date | Nov 19, 2013 |
| Priority date | — |
| Expiry date | Apr 6, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2151
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A server to implement human response tests of graduated difficulty can suppress access by spambots. The server includes a network interface and a test controller. The network interface connects the server to a network and facilitates electronic communications between the server and a client computer coupled to the network. The test controller is coupled to the network interface. The test controller implements a human response test with a level of difficulty on the client computer in response to an access request by the client computer. The level of difficulty of the human response test is dependent on a determination whether the access request is deemed to originate from a spambot.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.