| http://www.w3.org/ns/prov#value | - An example of the invention is illustrated in the drawings in which: FIG. 1 is a plan view of a credit card using the access medium; FIG. 2 is a cutaway plan view of the card of FIG. 1, showing the position of the secure substance in phantom; and FIG. 3 is a schematic diagram of the method of using the medium.
|
