Captcha image scramble
US9344283B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 25, 2012 |
| Grant date | May 17, 2016 |
| Priority date | — |
| Expiry date | Jun 25, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/179
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Particular embodiments determine a modified image for a CAPTCHA. The CAPTCHA may include an original image, a challenge based on the original image, and/or a correct response based on the original image. The modified image may be a scrambled version of the original image. Web-browser-executable code is determined for unscrambling the modified image back to the original image. The modified image and the web-browser-executable code are then provided to a computing device. Upon receiving the modified image and the web-browser-executable code, the computing device then displays the original image based on the modified image and the web-browser-executable code.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.