Patent ID: 8713703
Filing Date: 2014-04-29
Classification: G06F,H04L

Abstract:
1. A method for determining whether to allow access to a computer resource, the method comprising the steps of: a computer system receiving an indication to execute a Completely Automated Public Turing Test to Tell Computers and Humans Apart (CAPTCHA), and in response, the computer system selecting a first plurality of still images that when placed in a specific order suggest a first chronological sequence having chronological gaps such that when viewed in sequence do not depict motion from one image to the next; the computer system presenting the first plurality of still images to a user; the computer system receiving, from the user, a suggested order of the first plurality of still images; the computer system determining that the suggested order for the first plurality of still images matches the specific order, and in response, the computer system granting the user access to a computer resource; the computer system selecting a second plurality of still images that when placed in another specific order suggest a second chronological sequence having chronological gaps such that when viewed in sequence do not depict motion from one image to the next; the computer system presenting the second plurality of still images to a second user; the computer system receiving, from the second user, a suggested order for the second plurality of still images; the computer system determining that the suggested order for the second plurality of still images does not match the other specific order, and in response, the computer system increasing a level of complexity for the CAPTCHA, with regard to the second user, and selecting a new plurality of still images for the second user based on the increased level of complexity; and the computer system determining whether a particular image from the second plurality of still images has been a member of a failing set of images a threshold number of times, and if so, removing the particular image from a collection of images from which still images are selected.