How do locksmiths open house doors?

Most locksmiths use an array of tools to unlock residential door. There is a standard kit that most locksmiths have to carry out these duties. The tools that are needed depend on the type of lock that is in the door. For example a there is a technique called lock bypassing that locksmiths can use to preserve the integrity of the lock itself. There is also another traditional technique called pin/ tumbler, which involves two tools to manipulate the locks insides.