The Star Wars: The Old Republic Combat Logger, for instance, keeps track of in-game damage, threats and healing data on-screen.

ENGADGET: Razer Blade review (late 2012)

The Letter Logger can be programmed to check its position every few minutes, over longer intervals, or only when a built-in motion detector senses movement, says Jude Daggett, of TrackingTheWorld.

ECONOMIST: Monitor