Abstract: An electronic device for authentication of a bottle whose neck is closed by a stopper covered by a cap is positioned between the bottle and the cap, with an electronic circuit including: a flexible insulating support with at least one conducting wire forming circuit traces; an electronic chip storing identification datum for the bottle, an antenna to transmit the identification datum to an external reader when the antenna is in the area of coverage of the reader; a unit for detecting piercing of stopper at least partially covering the neck when the device is positioned between the bottle and the cap, and which are linked electrically to the electronic chip by the tracks of the circuit, the electronic chip being configured in such a way as to determine that the stopper is removed and/or pierced when the electrical link with the unit of detecting piercing of stopper is broken.