Lockpick

The Lockpick is an item appearing in the Survivor Timeline, allowing Lara to open locks that are too strong to be broken by the climbing axe.

Rise of the Tomb Raider
In Soviet Installation a remnant will offer Lara the side mission Communication Breakdown, in which Lara must disrupt Trinity's communications by destroying relay boxes. Upon returning to the mission giver, players will gain access to the lock pick.

Shadow of the Tomb Raider

 * A makeshift lockpick that allows Lara to open padlocks found on Conquistador treasure chests.

Moraekah, a travelling merchant, will sells the lock pick for 2000 gold. Moraekah cannot be found until the mission Find Takiy's Dice within The Hidden City. She is the last outcast that can be found.

Trivia

 * Lara is only ever seen picking a lock in game once without the aid of the lock pick, using a hairpin to unlock handcuffs she was in.
 * She had previously picked a door lock in issue 12 of Dark Horse's Tomb Raider comics.