Patent ID: 7437671

Claim:
A method of enabling user interaction with computer software running in a computer system via: a first interface surface containing first information relating to the computer software and including first coded data indicative of at least one first interactive element relating to the computer software, said first coded data being printed as a collection of first tags, each first tag identifying an identity of the first surface and a location of the first tag on the first surface; and a sensing device which: contains identifying data indicative of an identity of the user; and, when placed in an operative position relative to the first interface surface, senses at least some of the coded data and generates indicating data indicative of the identity of the first surface and of the position of the sensing device relative to the first surface; the method including the steps of, in the computer system: (a) receiving the identifying data from the sensing device; (b) receiving the indicating data from the sensing device when placed in an operative position relative to the first interface surface; (c) identifying the at least one first interactive element from the indicating data; (d) identifying user data from the identifying data; (e) operating the computer software at least partly in reliance on the user data, and in accordance with instructions associated with the at least one first interactive element; and (f) instructing a printer to print a second interface surface representing the output of the computer software operating in accordance with the instructions, said second interface including second information and second coded data indicative of at least one second interactive element relating to the computer software, said second coded data being printed as a collection or second tags, each second tag identifying an identity of the second surface and a location of the second tag on the second surface, wherein the sensing device is further adapted to store a sensing device identifier which is adapted to distinguish the sensing device from other sensing devices of the same type.