I have 2 questions about the iPod Touch. 1. What is the black patch thing on back of the iPod Touch in the upper left corner? Why is it there? 2. Most people can't see it, but on the front (face) of the iPod Touch in the top black section off the screen, in the iPod it looks like there is a sensor, or camera, or something inside...What is it? Sorry that it's not specific enough...If I find a picture of it, where you can see it, I'll post it. Thanks for your help.