Laboratory Keycard

The laboratory keycard is a miscellaneous item in Fallout: Brotherhood of Steel. It gives access to the Vault's laboratories.

Background
Rhombus, along with his men, entered Los and stole the Vaults' main laboratory keycard from a cult organization. He and his men fought the cult, but lost to them, so he was captured and taken to Los' torture chamber near the docks and was tortured by Blake for the location of the stolen keycard. Having hidden it under a truck, Rhombus later assists the Initiate to its location. Once in destination however, he is blown up by a ghoul suicide bomber.

Unable to continue fighting, he gives the Initiate the keycard and entrusts them with the task of stopping Attis' army and finding the Secret Vault entrance.

In the Residence hub, the keycard is taken from the Initiate by Attis, right after Defeat Mutant General. The card is essential to progress and Patty tasks the player to retrieve a copy during Find Laboratory Key in the Vault-Tec Corporate Vault Ruins from a Vault scientist, Dubois.

Gameplay
Key to enter the Vault-Tec Corporate Vault Laboratories.

Locations

 * Rhombus, given to the Initiate at the end of Escorting the Paladin (taken away again in Defeat Mutant General)
 * Dubois, and a little later on, a deathclaw in the Vault-Tec Corporate Vault Ruins Cave.

Related quests

 * Escorting the Paladin
 * Defeat Mutant General
 * Find Laboratory Key
 * Kill Deathclaw Mother