1. A system for registering a user with a sensing device using a form, the form having disposed thereon or therein information relating to at least one signature field, and coded data at least partially indicative of the signature field, at least some of the coded data being coincident with the information, and wherein the system includes a computer system for: receiving indicating data from a sensing device, the sensing device, when moved relative to the signature field, sensing the coded data and generating the indicating data using the sensed coded data, the indicating data being at least partially indicative of: a sensing device identifier; the signature field; and, movement of the sensing device relative to the signature field, the movement relating to a handwritten signature provided by the user; determining, from the indicating data, signature data at least partially indicative of the handwritten signature; identifying, from the indicating data, the sensing device identifier; and, storing, in a data store, the signature data and the sensing device identifier, to thereby register the user with the sensing device.