[Never Programmed]: No need to worry that it will be locked, as some chips should be programmed just one time. [Usage]: Used for key fob, remote control transponder immobilizer, keyless entry. [Universal Replacement]: Compatible with Volkswagen, Compatible with Alfa, Compatible with Audi, Compatible with Honda, Compatible with Vauxhall, Compatible with Fiat, Compatible with Seat, Compatible with Kia, Compatible with Chevrolet, etc. [Advice]: You must program the transponder chip by a automotive lock-smith. [Note]: Made from glass material, it is so small, please keep away from children.