Their summary: "A company called Layar, based in Amsterdam, is working on products that take augmented reality in a slightly different direction. They provide a platform that allows anyone to build an AR app. Consider these ideas: you can use your mobile phone's camera to view the world; your phone knows where you are and what you are looking at. The implications are profound. One of the most interesting apps that someone produced was a virtual tee-shirt shop. It was placed in the 20 most expensive shopping streets in the world, selling t-shirts. Stop and think about that for a minute. He built a virtual shop where a real one already existed. His shop was accessible via a mobile phone, while the real one was accessible through, well, being real. Real space and its virtual overlay are being used by different people. There will be lawyers."