a new Project about identifying hand gestures

Hello People,
I am new to Arduino and this whole thing. I am working on a project where i have make a tool to identify hand gestures. I thought you people can help me in this. I will tell you what my tool has to do

  1. the tool should be placed or stick to hands (like sensors)
  2. It should identify the basic hand gestures like hand is going up, down, left, right etc.
  3. It should give the time of activity like from what second to what second my hand was up or down.
  4. It should provide a data file of all that information.

I really believe you people can help me. I dont know where to start. Please let me knoew what tools should i get and how to program them to get what i need..

Thanks a lot...

Watch the video on this page.