The card (1), such as a credit card or other similar card, comprises at least a RFID chip module (3) and an antenna (4). The antenna (4) is interrupted in an interruption zone with two separated contact ends (5',5'') and a contacting material (10) is placed in said interruption zone in order to enable a contact between said two separated ends (5',5''). Said contacting material (10) becomes conductive under pressure so that the antenna is functional only when the contacting material (10) is put under pressure by a user.