Image-based challenge-response testing
US8904493B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 29, 2012 |
| Grant date | Dec 2, 2014 |
| Priority date | — |
| Expiry date | Aug 29, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2463/144
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Various implementations for verifying that a user device is being operated by a person are described. In some implementations, a method includes receiving a challenge request. The method selects two or more first images from a first image category and one or more second images from one or more second image categories, which are distinct from the first image category. The method sends a challenge to the user device for presentation to the person. The challenge includes a challenge parameter and data describing the two or more first images and the one or more second images. The method receives a challenge response from the user device describing a user selection of at least one image from among the two or more first images and the one or more second images and determines a result of the challenge based on the challenge response and the challenge parameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.