The functioning of the locksmith is mainly dependent upon the locks that they mainly use, without using locks maintaining a secure atmosphere in any place or any area become impossible for locksmith and this is the reason that locksmiths get the identity of itself by joining the two terms called lock and the smith. They are masters in handling all kinds of locks and currently using two types of locking systems at a large scale first is the manual category of lock and the second one is the smart lock technology. In manual locks, they mainly prefer to use lever handle locks, knob locks, and deadbolt type of locks and in smart lock technology, they mainly prefer to go with biometric and personal identification-based locks at a higher level. Locksmith Silver Spring MD mainly promotes to use of the smart locking system at a higher level than the manual locking system. According to them, modern locks are highly superior to manual old locks.