I've always been a fan of the tech of Aliens. James Cameron is a legitimate creative genius and some of my favorite all time movie gadgets are in that film. This is one of them, the motion tracker. It's humble real-life story is as fascinating as it's time on screen, being the product of the 80's scrappy and get-it-done prop builders. This version by W. Navarre does it justice...game over man, game over.