Once upon a time the job of the locksmith was considered confined only to the making of duplicate keys and defeating the locks with his talent. The locksmith can make the key of any lock by just taking a view of that lock and understanding its mechanism. Earlier locks could be opened by the key only but nowadays there are number of ways to unlock a lock. There are number of touch sensitive locks, vision sensitive etc.

The San Francisco locksmith who are professional with locks and security system have developed very efficient and best security system for houses. The very first step while designing this security system was choosing the right lock which has its unique key design. One of the oldest lock was known to be made by the Egyptians 4000 years ago. The locks which were made in that era were found in the ruins of the king Sargon II inside his palace at Khorsabad. This lock was also following the principle of pin tumble which is used by the most modern locks.

In the ancient times the locksmith were considered to be responsible to make locks for entire palaces and for city houses. And the locksmith used to spend number of hours to days in cutting the screws according to the lock and filing them together to make an efficient lock.