Our goal is to demonstrate the use of custom markers, as they might appear on trading cards or on the pages of a children's book. Each marker has a different code, such as bar code, that the app will identify for each different planet. Using coded targets is easier and more efficient than photographic image (also known as natural feature) tracking.

For this project, we will use markers built from standard examples provided with the Vuforia and ARToolkit packages. We will provide a simple example of such cards in the files provided by the publisher for this book. See PlanetMarkerCards.pdf for Vuforia-compatible markers and PlanetMarkerCardsARTK.pdf for the AR Toolkit ones in the Files folder.