Abstract: RFID transponders having a polymer film as the support for at least one antenna and having a circuit chip electrically connected thereto, possessing on one surface of the polymer film a printable/writable layer comprising particulate pigment and film forming binder and on the opposite surface of the polymer film an adhesive layer covered with a cover layer. The directly printable RFID transponders are useful as labels, especially pressure-sensitive adhesive labels or tags for labelling goods for transportation, containers or textiles, or else with indetachable cover as identification cards or access authorization cards.