This could mean several things. The main reason we answer a lockout call (and this is part of our 24-hour locksmith services) is because someone has quite accurately locked themselves outside of the home. They have usually lost the keys, left them inside of the home, or left the keys somewhere else and can only get to their spare keys by getting inside of the property. We think of such a call as an emergency locksmith call and get to the premises as fast as possible.
We also think of lockout services as calls that might lead to a new lock installation. In some instances, it is because a home or property owner has snapped a key inside of the lock, and it is because the lock is too old or in need of repairs. If we feel it would be better do offer a new deadbolt lock installation or basic lock installation, we will make that suggestion at the time we provide the lockout service.