Do any games "reveal" passwords like this?

[I Don't Need A Name]

During a game, your character may find something, like a computer for example, that is password protected, but needs to look at it in the game for some reason. The game will contain an item (like a document) which reveals the actual password.

However, in real life that would be less likely - if there is a document containing the password, it's more likely to be only on the computer itself. To add a bit more realism (even if it's an unrealistic game) they could just hint to the password, through dialogue and things relating to whoever created the password.

For example; it could be mentioned that whoever created the password is "a fan of a book" (it could be real or fictional) and "identifies with a character" - so the player (who hasn't just given up and looked at a walkthrough) will be left to determine that the password must be that character's name, or something. That's just one example.

The Secret World

Exactly that. The convoluted puzzles that The Secret World has, whereby you have to do real research into finding out the answer is insane. They've got webpages for fake companies that you can access to get details for a clue to what you need to do next in quests.