The Ghost Dance application that can be downloaded from the Google Play store uses your camera through the Google ARCore service in order to detect the floor and other elements of your environment to be able to stick the software generated 3D model to the real environment. This way you can walk around and study the 3D models from any direction and angle. The images taken by the camera are not saved, forwarded or used by our application. According to our knowledge they are lost as soon as you close the application.