A system for registering a sensing device with a relay device using a form. The system includes a computer system for determining information relating to at least one interactive element associated with the registration and generating an identity indicative of the at least one interactive element. The computer system generates print data at least partially indicative of the information and the identity and then transfers the print data to a printer. The printer is responsive to the print data to print the form including the information and coded data relating to the at least one interactive element, the coded data being coincident with the information such that a sensing device placed in an operative position relative to the information senses at least some of the coded data and generates indicating data using the sensed coded data.