Patent ID: 7216224

Claim:
A method for enabling registration of a user to use a computer system, the method including: providing a printed registration form containing information relating to user registration, the form including a plurality of tags, each tag containing coded data indicative of an identity of the form and of that tag's position on the form, each tag including a plurality of perspective target structures; receiving, in a computer processing system associated with the computer system, indicating data from a sensing device regarding the identity of the form and at least one of a position and a movement of the sensing device relative to the form; and identifying, in the computer processing system and from the indicating data, at least one parameter relating to user registration, and storing the at least one parameter so as to be accessible by said computer system, wherein the sensing device comprises: (a) an image sensor adapted to capture images of at least one tag when the sensing device is placed in an operative position relative to the form; and (b) a sensing device processor for: (i) identifying at least one tag from one or more of the captured images; (ii) identifying at least one perspective target structure in the captured images; (iii) determining a two-dimensional perspective transform of the tag using the identified at least one perspective target structure, the perspective transform being indicative of a perspective, within the captured images, of the coded data contained with the tag; (iv) decoding at least some of the coded data using the two-dimensional perspective transform; and (v) generating the indicating data using at least some of the decoded coded data.