Hardware-based human presence detection
US8701183B2 · kind B2 · utility
2Cited by
1References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2010 |
| Grant date | Apr 15, 2014 |
| Priority date | — |
| Expiry date | Sep 3, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2133
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method, system, and computer program product containing instructions to provide hardware-based human presence detection. Rather than rely upon software to display a CAPTCHA image, hardware in the form of a sprite engine of a graphics device is used to write a random text string directly to the display device, overlaying the user interface provided by software. Because the sprite engine is isolated from a host operating system for the system, the random text string cannot be captured and processed by software robots running under the host operating system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.