Device for exchanging data, some of which are representative of at least one authorized user of an automotive vehicle

The assembly (10) has entry (24P) for a driver identification card (14) and bistable mechanism (44) to secure the card in a stable position corresponding to vehicle running. A separate spring loaded button (54) provides stop/start operation through a contactor which either starts the motor and retains the identification card in the running position or stops the motor and releases the card.