Deadbolt. This lock type is considered to be the most secure one. These locks are sturdy and really hard to break. They can be single-cylinder or double-cylinder.

High security locks traditionally offer a very high number of real and theoretical key differs to prevent cross keying and allow for complex master keying configurations. Almost all high-security locks have components designed to resist manipulation from lockpicking and decoding attacks.

Keyed alike is the term used to describe multiple locks having the same cut so that one key can fit all the locks. Having your locks keyed alike is the most convenient way to handle and manage all your keys.