Locksmiths are very proud of the work that they do, and they want to be sure that they are doing work for the right person. There are typically state guidelines that indicate what a locksmith is going to need to have before they can open up a door during a home lockout situation. They may make you sign a waiver that you have permission to open up the home that you’re requesting service for. They will also require an ID, piece of mail, or something else that identifies that you’re the person that lives at the address in question.