Patent ID: 7162442

Claim:
A method of enabling an auction buyer to submit a bid, the method including the steps of: providing the auction buyer with a printed paper form containing visible information relating to a bid transaction, and also including invisible coded data indicative of at least one parameter of the bid transaction and of a plurality of reference points of the form, the coded data identifying a unique location of each of the reference points relative to the form wherein the visible information and the invisible coded data are printed substantially simultaneously and wherein at the time of printing a computer system associates the type and spatial extent of the coded data with the spatial extent of at least some of the visible information; receiving, in a computer system, data from a sensing device regarding said at least one parameter and regarding movement of the sensing device relative to the form, the sensing device, when moved relative to the form, sensing the data regarding said at least one parameter using at least some of the coded data and generating the data regarding its own movement relative to the form; and interpreting, in the computer system, said movement of the sensing device as it relates to said at least one parameter.