Patent ID: 7153557

Claim:
A self-adhesive or thermally bondable security document (V) comprising: at least one medium having a front side capable of receiving print, at least one self-adhesive or thermally adhesive layer disposed on a reverse side of said medium, said adhesive layer having a front surface and an adhesive back surface such that said medium is capable of being affixed to an article (P), and at least one marker that emits a signal which is characteristic per se, said marker being contained in a layer selected from the group consisting of (i) the adhesive layer and (ii) another layer intermediate between the adhesive layer and the front side of the medium, wherein said marker is chosen from particles that can be detected by magnetic resonance, magnetic particles that can be detected by a magnetoresistive head, particles that can be excited at given wavelengths to emit fluorescence, UV-detectable particles, IR-detectable particles, particles that can be detected by biotechnological method, and mixtures thereof, such that, after the document (V) has been bonded by means of said adhesive layer to the article (P), in the event of disbondment of the document (V), at least a portion of the adhesive layer and at least part of said marker detaches from the medium.