Patent ID: 8622434

Claim:
A sheet product set of identification elements comprising: a first planar identification element including: a planar body having two opposing major sides defining an outer perimeter of the body with length of the major sides exceeding width of the major sides, the body including printing visible on at least one of the two major sides and the body further including an opening extending through the body and the two major sides so as to provide attachment of the body to a key holding member; a magnetic strip on at least one of the two major sides of the body; and at least one unique code on at least a first of the two major sides of the body uniquely identifying the element from other elements having at least some of the same printing and having codes different from the at least one code, the at least one code being located on the first major side generally along a first outer perimeter edge of the body, between the first outer perimeter edge and the opening, the code being readable by swiping the code and first outer perimeter edge of the body through a swipe reader machine capable of reading the unique code; and a second planar identification element releasably joined together with at least the first planar identification element in the sheet product set of identification elements, the second identification element also including the at least one unique code, the sheet product set including a flexible sheet material core and a first flexible material sheet covering permanently applied to a first major side of the sheet material core, each of the first identification element and the releasably joined second identification element including separate portions of a single piece of the sheet material core defining the core of the sheet product.