Most people will keep up to 10 keys with them when they go out.Your key ring is a clear demonstration of just how ubiquitous locka are: You probably interact with locks meny times every day. in a regular deadbolt lock When you turn the key, the bolt slides into a strike on the door frame.
The main reason we use locks is that they provide us with some security. But in movies detectives and burglars are able to open locks very fast,using only a pair of paper clips. very differnt from reality.
Locksmiths will define picking as the manipulation of a cylinders components to unlock it without using a key. To understand it you first have to know how locks work. For most of us, the most common lock is the regular deadbolt lock you have on your front door. In a normal lock, a bolt or latch is embedded in the door so it can be extended out the side. The bolt is lined with a notch in the frame. When you turn the lock, the bolt extends into the strike plate in the frame, so the door wont move. When you retract the bolt, the door opens.