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A locked cabinet in Deus Ex. Note the two meters describing the number of lockpicks needed and the physical integrity of the door.

Locks are gameplay elements that appear in all games of the Deus Ex series. Locks typically serve as obstacles that the player must overcome in order to pass through a locked door or obtain valuables in a locked container.

Deus Ex[]

Deus Ex features two types of locks:

  • Traditionally locks, which can be picked using lockpicks and/or opened using NanoKeys on the keyring. Traditional locks are implemented as properties of doors. Locked doors have a meter indicating their "Lock Strength." The Lock Strength must be taken to 0% of 100%, though it can start at any number in between. One lockpick will lower the percentage by a certain number, and this is determined by the Lockpicking skill.
  • Security keypads, which are interactive electronic locks that can unlocked by entering a passcode or by use of a multitool.

If JC Denton is spotted by friendly AIs when he is lockpicking or bypassing, they might turn hostile.

Deus Ex: Invisible War[]

In Deus Ex: Invisible War, there are still interactive electronic and simple locks. All interactive locks can be opened through explosives, softkeys or universal multitools, which will now open a metal lock on a door along with keypads, which can no longer be used button-by-button as they were in Deus Ex. The Keycode must be read to access a keypad, and the code is never revealed to the player. Many more locks can now be opened through hacking a computer and selecting the "open" queue.

Deus Ex: Human Revolution[]

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A keypad in Deus Ex: Human Revolution

In Deus Ex: Human Revolution, only electronic locks, known as keypads, can be found in the game. Keypads can be accessed by the hacking minigame or by entering a four-digit code. Unlike Deus Ex, they are always four-digit and they cannot contain symbols such as "*" or "#". Those symbols on the keypad are replaced with the "Close" and "Undo" buttons.

If the player has found the code in-game, the code will be displayed when the right keypad is used. No penalty is given if the code is incorrectly entered. However, failing a hack will cause the keypad to be locked down for 30 seconds and may trigger an alarm.

Deus Ex: Mankind Divided[]

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A keypad in Deus Ex: Mankind Divided

Locks in Deus Ex: Mankind Divided come in two forms:

  • Keypads and terminals – Keypads (also known as "terminals" when used to unlock additional control functionalities), are similar to the keypad locks in Deus Ex: Human Revolution. Each keypad will have between 5 and 2 hacking attempts, based off the lock strength. Locks can be hacked, opened with a Multi-Tool, or opened with a code. For details on game mechanics, please see the linked article.
  • Keycard readers – Keycard readers function as locks that can be opened only if the corresponding keycard has been found.