A method of associating an object with a sticker placed on a surface is disclosed. The sticker has coded data encoding a sticker identity. The sticker also has a region which exposes a position on the surface. The surface has coded data encoding surface identity and locations on the surface. The method...http://www.google.com.tw/patents/US7697714?utm_source=gb-gplus-share專利 US7697714 - Associating an object with a sticker and a surface
