Lock Types Explained: Padlocks, Deadbolts, Smart Locks

Tap a lock type to see its features.

Padlock

A portable, loop-shaped lock opened with a key or combination, commonly used for lockers and bicycles.

Deadbolt

A sturdy lock built into a door that opens only with a key rather than a spring mechanism, widely used for front-door security.

Combination Lock

A lock opened by entering the correct number or letter sequence, with the advantage of not requiring a physical key.

Smart Lock

An electronic lock that opens with a passcode, fingerprint, or smartphone instead of a physical key.

Cam Lock

A lock that secures a latch using a rotating cam, commonly used for mailboxes and drawers.

Chain Lock

A supplementary lock that lets you open a door only partway to identify a visitor without opening it fully.

Choose the Security Level That Fits the Purpose

The strength needed differs greatly between a low-security use case like a locker and a high-security one like a front door, even though both use "locks." Smart locks that let you skip carrying a physical key have also become widely adopted in recent years.

Why Deadbolts Are Considered More Secure

Because a deadbolt only retracts with a key rather than a spring-loaded mechanism, it is far harder to force open, which is why it is widely recommended as a primary lock for exterior doors.

Frequently Asked Questions

Can a smart lock still be used during a power outage?

Most smart locks run on batteries or include a backup physical keyhole, so they are designed to keep working even during a power outage.

Why is a deadbolt more secure than a regular handle lock?

Because it retracts only with a key rather than a spring mechanism, it is much harder to force open, giving it significantly better security.