CONTROLLING ACCESS TO COMPUTER SYSTEMS AND FOR ANNOTATING MEDIA FILES

摘要

A system and method for digitizing media is disclosed. The method includes creating (50) an electronic representation of an image of a document; converting (52) the electronic representation of the image of the document into an electronic representation of characters of the document; designating (56) at least one portion of the electronic representation of the characters of the document as not having a known answer and using the at least one portion designated as not having a known answer as a read part of a challenge, wherein the challenge includes a verify part for which an answer is known and the read part for which the answer is not known; presenting the at least one portion of the electronic representation of the characters as the read part of the challenge to multiple users; receiving an interpretation of the read part of the challenge from each user; comparing the received interpretations and establishing a confidence level for the interpretations; and responsive to one of the interpretations reaching a predetermined level of confidence, establishing the interpretation as correct.