Jail cell password is a holotape in Fallout 3.
Location[]
It can be found on Officer Wilkins or in a weapons locker in Vault 101 during Trouble on the Homefront. With it you can access the terminal which unlocks Edwin Brotch's cell.
Transcript[]
Jail Cell Password - Stockholm
Behind the scenes[]
Used in this context, the word Stockholm may refer to "Stockholm syndrome", a real psychological phenomenon wherein prisoners, under the duress of captivity, develop feelings of empathy for their captors, and may even join forces with them.