Reaching over the side of the car to unlock the passenger door is easy enough, but it is certainly a little undignified.

For doors with no deadbolt ... If you don’t want to remove your old lock or change your keys, the Yale Approach Lock with Wi-Fi + Keypad upgrades your existing deadbolt with brains.

Door Lock Ratings Protect your home and family with the best door lock or smart lock. Some door locks offer extra security with deadbolt and spring-bolt reinforcement technology.