Imagine being able to track anyone, anywhere in the world almost instantly. Scary, eh? Well, not if you’re looking for a low-cost turnkey system for managing your small fleet of trucks, planes, trains, boats, kids—you get the picture. The $450 UberTracker from SparkFun Electronics is a complete cellular/GPS/e-mail hardware package that can continuously email its GPS coordinates from anywhere in the world via a cellular data connection, and it's a snap to set up.