A lock set which is installed by boring two circular holes in the door. Door handles may also use the same installation.

Similar to a mailbox, items can be deposited to the safe without without opening it. This is a useful tool for businesses. Employees can deposit money, tenants can deposit rent checks, etc.

This safe will keep contents safe from fire for 1-2 hours depending on the model.

Hardware remains on door but the cylinder is rekeyed to make the old key irrelevant, and new keys are issued.

An audit trail (also called audit log) is a security-relevant chronological record that provides documentary evidence of the sequence of activities at a door: Who entered, and when.

A door with a fire-resistant rating, used as part of a passive fire protection system to reduce the spread of fire and smoke between separate compartments of a structure and to enable safe egress from a building.

Usually found on commercial doors and allows entry by “buzzing” people in.

Exit devices are known by different names including the crash bar, panic bar, panic device, panic hardware, fire exit bolt, push bar and cross bar. They are typically on commercial exterior doors and allow easy exit.

This lock uses codes, cards, or key fobs to gain entry.

A master key system is a key plan whereby selected keys can open a number of pre-defined doors.