About the Mechanical Door Locks

Advantage
Reliably used for thousands of years
Longer lifespan
Does not require electricity
Weatherproof
Easy to operate
Doesn’t require batteries to change or recharge

Shortcoming
Not as advanced as electronic door locks
Does not log when the door has been opened and closed
Keys are easily lost or stolen
Might require multiple lock changes
It can often take longer to gain entry when fumbling with keys

Types of Mechanical Door Locks
Mortise lock: This is a typical type of door lock. It provides decent security, but it’s difficult to install as it requires drilling a pocket into the door.
Cylinder lock: Another common type of mechanical door lock, offering different cylinder formats that indicate varying levels of security. However, these locks can be quite fragile, and are vulnerable to breaking when pressure is applied.
Spring bolt: Spring bolts are mechanical door locks that are spring-loaded bolts with an angled edge.
Deadbolt: A deadbolt is a lock bolt that is moved by turning a knob or key without a spring. This lock requires a key to open, and is more resistant to forced entry than a spring bolt.