Patent ID: 7233498

Claim:
A medium comprising: an antenna layer forming an antenna on a base layer; a transponder with having a memory and an interface patterned to cooperate with the antenna, the transponder having a thickness; a material layer on the antenna layer, the material layer having a void sized to receive the transponder; and an overcoat layer on the material layer with the overcoat layer adapted to permit the formation of an image thereon, wherein the void has void walls that are formed from an elastic material and arranged so that the void walls are elastically deformed during insertion of a transponder into the void and respond to the elastic deformation in a manner that holds the transponder in the void with the transponder positioned in the void to cooperate with the antenna; and wherein said void walls define a void with an outer portion near an outer surface of the material layer and an inner portion proximate to an inner surface of the material layer near an antenna, said outer portion having a width that is less than a width of the transponder so that as the transponder is inserted into the outer portion, the outer portion elastically deforms to allow the transponder to pass into the inner portion and then expands to capture the transponder.