A cryptographic method and a chip card which is used to carry out the method. The supplemental cache can be used to supplement a vertex cache used with a graphics processing unit. Each of the contacts includes a first contact portion for connection to a counterpart connector, and a second contact portion being continuous with the first contact portion and formed at a tip side of the contact. The combination of the signal and the identifier unequivocally identifies a fragment within the fragments of a track. For example, the second elongated side may be, for example, a box shaped construction.