In this tutorial, you will learn exactly how to use the Trapster app for your iPhone or iPod Touch. This app is similar to maps, but holds a ton more features. Most importantly, Trapster will give you a heads up for all of the police trap points that are currently on your route. Trapster works because users submit the locations of known traps so you can log in and find them. Stay safe, and avoid tickets with this handy iPhone application.