HURT UNLOCKER: Retiredlocksmith Daniel Ferraris — with his master-key set in hand — greets a buyer at his home in Union City, NJ. Angel Chevrestt This man has the keys to the city — and he’s selling ...

If you have ever locked your keys in your car, lost your house keys late at night, or had a lock suddenly stop working, you may have heard someone suggest calling a mobile locksmith. But what exactly ...