http://hellonewworld.tistory.com/183
http://toors.tistory.com/entry/Android-low-level-touch-event-%EB%B6%84%EC%84%9D%ED%95%98%EA%B8%B0
MultiTouch
http://www.kernel.org/doc/Documentation/input/multi-touch-protocol.txt
http://hellonewworld.tistory.com/183
http://toors.tistory.com/entry/Android-low-level-touch-event-%EB%B6%84%EC%84%9D%ED%95%98%EA%B8%B0
MultiTouch
http://www.kernel.org/doc/Documentation/input/multi-touch-protocol.txt