A locksmith must need to know how all types of locks and keys work. When you hire a locksmith, he will first need to determine what type of lock has been installed in your door. A pin tumble lock contains a plug that is located in a cylindrical chamber. When the key makes the lock pins fall into place, the plug can rotate inside of the chamber. No matter what type of lock you have, a home locksmith in Charlotte will be there to assist you. A key specialist providing lockout service in your area will also be able to create a replacement key for your lock. To take a look at how locks and keys work, be sure to check out this video from Carlo Alfredo Clerici.