Jail cell password

Jail cell password is a holotape in Fallout 3. It can be found on Officer Wilkins or in a Weapon Locker in Vault 101 during Trouble on the Homefront. With it you can access the terminal which unlocks Edwin Brotch's cell.

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.