Wow, it's very impressive.... It can automatically draw a line to connect any object on the table... very nice effect. If you confuse how it work, just watch the video for sure...http://1.bp.blogspot.com/_Miv3T60Zq1.../s400/iBar.jpghttp://2.bp.blogspot.com/_Miv3T60Zq1...s400/ibar1.jpg