Overlay human interactive proof system and techniques
US8935767B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 2010 |
| Grant date | Jan 13, 2015 |
| Priority date | — |
| Expiry date | Jan 18, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2133
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The overlay human interactive proof system (“OHIPS”) and techniques described herein operate in conjunction with any known or later developed computer-based applications or services to provide secure access to resources by reliably differentiating between human and non-human users. Humans have a generally superior ability to differentiate misaligned characters or objects from correctly aligned ones. As such, the OHIP splits an image including one or more visual objects into two or more partial images to form a HIP. The partial images may also be further split into groups of sub-partial images, and/or the partial images (or the sub-partial images) may be moved, so that at any given alignment position, a user can recognize only some visual objects. A user is instructed to reassemble the partial images at one or more predetermined alignment positions using a GUI, and the user is asked to identify information regarding one or more visible objects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.