Patent ID: 8707453
Filing Date: 2014-04-22
Classification: G06F,G06K

Abstract:
1. A computer implemented method for restricting access to a computer system, resource, or network to humans via an interface displaying a reverse Turing test that exploits the semantic, symbolic, and contextual associations humans instinctively form between images of objects, by requiring the unknown subject of a test to indicate relationships between objects, the method comprising: a) managing, at the computing device, a first session when a protected resource is requested by an unknown subject; b) generating, at the computing device, a unique test for each session, based on a combination of configurable and random parameters, said test comprising the images of a plurality of disparate objects, of which a plurality share a meaningful semantic relationship; wherein the test comprises one of a associative test, requiring the unknown subject to match two objects that share a semantic relationship, or an exclusive test, requiring the unknown subject to isolate a single object which fails to share a semantic relationship with a plurality of other objects; c) localizing, at the computing device, instructions to the unknown subject, by generating a translated instruction string; d) composing, at the computing device, the images which comprise the test into a single flattened composite image; e) administering the test to the unknown subject; f) evaluating, at the computing device, the response from the unknown subject and providing a pass or fail result, and allowing or denying access to that resource is based on the result; and g) repeating steps a) through h) in a second session using the alternate of the exclusive test or the associative test that was used in the first iteration for the same or different unknown subject.