Captcha method and system
US8572756B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2011 |
| Grant date | Oct 29, 2013 |
| Priority date | — |
| Expiry date | Sep 27, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/083
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A CAPTCHA method executed by a CAPTCHA system is provided, comprising: receiving a CAPTCHA request comprising category information of an application service from an application server; responding to the application server with a token identifying the CAPTCHA request and a CAPTCHA image comprising a distorted advertisement word associated to the category information and a series of randomly generated and distorted characters, both the advertisement word and the characters being a CAPTCHA text intended to be typed by a user via a user equipment connected to the application server; receiving from the application server the token and a CAPTCHA answer submitted from the user equipment by the user; and verifying the token and the answer and returning to the application server a result of the verification. This provides an improved CAPTCHA system and method with better advertising effects and security.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.