resistive? ain't it supposed to be capacitive screen? that's why it didn't work when you used your nails.
No it clearly works with his nail, you can see the cursor following his movement..
Everything else but this video is saying that is is a capacitive screen. This is a big deal -- as the two-layer resistive screen is ugly and breakes down (good luck with the scroll-bar area on any 1-yr-old resistive device).