Patent ID: 8397275

Claim:
A computer program product comprising a non-transitory computer-readable storage medium having computer-executable program instructions embodied therein for configuring a computer system to execute: a test generator, configured to: generate an original image; separate the original image into a plurality of secondary images; generate a set of positions for the plurality of secondary images, the set including at least one position at which the secondary images overlap to form a composite image that reveals at least one portion of the original image, and at least one position at which the secondary images overlap to form a composite image that does not reveal any portion of the original image, associate a CAPTCHA query and an answer with the secondary images; and a test program generator configured to: generate an executable program that is adapted for execution by a client device having a display, and encoded with the set of positions, the CAPTCHA query, the answer, and the executable program configured to displace on the display of the client device, the secondary images over time responsive to the set of positions.