I can't believe it took me this long to notice it - but if you look at the top left hand corner of the touch screen (between the sleep/wake button and the edge of the screen) you will see a small dot, about 4mm diameter - you may have to look at it in very bright light. I've attached a diagram with the location of the dot circled in red. Anyone know what it's for? -secret infa red transfer feature? -secret camera? -nothing useful? Cheers.