A simple AR refers to an AR application on a computer or a device which installs software; it superimposed a 2D or 3D object or multimedia when a web camera meets a marker.
The simplest AR is when one application works together with one marker, which normally augments (emphasises) one
object.
The simple AR application becomes more interesting when it superimposes a 3D object such as building on a paper-based marker.
This simple AR can be controlled easily when the user turns on an AR application and holds a marker. At Assumption University of Thailand, an AR application has been used to simulate the main building