Player has an automated tool, explained or not, that automatically tracks vital points of any tasks they've agreed to perform.
Alternate names: Quest tracker, Mission tracker
The first video game about Task tracker was released on June 29, 2000.
The tracker may be a PDA, a journal, log book, a sign of impressive ability to remember, or whatever else. Gameplay wise they all function the same, by tracking your tasks largely without any player action, and often without any perceived action from the protagonist either.