This Tutorial will walk you through making a markerless GPS based augmented reality app with Vuforia and Unity 3D. The app will work for Android or IOS as long as your phone has a compass and Gyro. This tutorial is geared towards beginners so anyone should be able to follow along. This is not what Vuforia is intended for so its kind of a hack but it does offer a free alternative to getting the raw camera input in Unity, for which you would typically have to pay for a plugin (or struggle with cross platform issues yourself). The main problem with this type of AR is the 3D model is stuck in space and we can not get closer to it. We are going to try to get around this by using our GPS coordinates. We will find the latitude/longitude delta from where we were when the app started to our current position and use that distance to move the spaceship closer as we walk forward. This will give us the illusion that we are walking closer to the spaceship.