Dr Locksmith Las Vegas locksmiths are fully experienced when it comes to picking a lock. Different types of locks require different skills in order to unlock your door in the safest way possible. And if you’re looking to change a lock on the spot or re-key your locks, Residential locks re-keying is pretty popular for many reasons. The primary reason though is safety. Sometimes when keys get lost, it’s much better to have a lock re-key than to just have new keys produced.