A method of generating an association between a sticker and an object of an object type, the sticker having disposed therein or thereon coded data at least partially indicative of a sticker identity and the object type, the method including, in a computer system: receiving indicating data from a sensing device, the indicating data being at least partially indicative of the identity of the sticker and the object type, the sensing device, when placed in an operative position relative to the sticker, being responsive to sense at least some of the coded data and generate the indicating data using the sensed coded data; identifying, using the indicating data, the identity of the sticker, the object type and the object of the object type; and, generating an association based at least partially on the sticker identity and the object.