Flexible adhesive label for security furnished with at least one contactless microcircuit for an official document

A flexible adhesive vignette for anti-falsification security, including:

• a first flexible sheet, the size of which corresponds at least substantially to that of the vignette,
• at least one antenna for remote transmission, said transmission antenna exhibiting electrical-connection terminals linked to a first face of said first sheet,
• at least one microcircuit fixed to said first face of said first sheet in such a manner as to be in electrical contact with electrical-connection terminals of a corresponding transmission antenna,
• a layer of external adhesive covering a second face, opposite said first face, of said first sheet, said layer of external adhesive being chosen to enable the gluing of the adhesive vignette onto a face of an imprintable flexible sheet of an official document,
• wherein said first sheet and each microcircuit are covered with a second imprintable flexible sheet pasted by means of a layer of adhesive onto said first face of said first sheet and onto each microcircuit, said layer of adhesive adhering simultaneously to each microcircuit and to said corresponding transmission antenna and forming a thickness compensation for each microcircuit.

An official document such as a passport, a driving license, a vehicle registration certificate, a diploma, an administrative certificate, an identification certificate an authentication certificate, or an agreement deed, wherein it includes, applied on a face of an imprintable flexible sheet of this official document, at least one flexible adhesive vignette for anti-falsification security, including:

• a first flexible sheet, the size of which corresponds at least substantially to that of the vignette,
• at least one antenna for remote transmission, said transmission antenna exhibiting electrical-connection terminals linked to a first face of said first sheet,
• at least one microcircuit fixed to said first face of said first sheet in such a manner as to be in electrical contact with electrical-connection terminals of a corresponding transmission antenna,
• a layer of external adhesive covering a second face, opposite said first face, of said first sheet, said layer of external adhesive being chosen to enable the gluing of the adhesive vignette onto a face of an imprintable flexible sheet of an official document,
• and wherein said first sheet and each microcircuit are covered with a second imprintable flexible sheet pasted by means of a layer of adhesive onto said first face of said first sheet and onto each microcircuit, said layer of adhesive adhering simultaneously to each microcircuit and to said corresponding transmission antenna and forming a thickness compensation for each microcircuit.