Arduino Unlock Pattern

This was a personal challenge, I wanted to design something similar to the Android Unlock Pattern in less than 30 minutes.
Basically, you set the points which you must go to (e.g. go to point 1,1 then point 50,50). Thankfully, because it would be really hard to hit exactly the point, we can set up boundaries (point 1 is between 1,1 and 10,10). This makes it much easier to 'hit' the point. Additionally we have to make sure that you've been to the previous point so you can't to the pattern the wrong way around.

Step 1 What you'll need.

You want to have an Arduino, an LCD (here it's a nokia 3310/5510 display) and a nintendo DS Touchscreen. Buy the breakout board for that, it's really difficult to wire it otherwise. You'll also want some some wires.