Keys 4 Cars provides 24/7 automotive locksmith services across Middlesex County in Massachusetts, including transponder key programming and cutting, replacing lost car keys and emergency lockout services. If you lose your car keys, we will be able to reprogram new transponder chips by running the VIN, make and model of your vehicle in specialized equipment. Keys 4 Cars can extract broken keys from your locks and ignition and unlock the vehicle while minimizing damage to the car itself.