Quote:
Originally Posted by k.rad
You shouldn't need to press hard -- in fact you can actually open a book/link without even touching the screen at all if your finger is very close to the screen, but not quite touching it. I think the main reason for poor or no response is that it will only respond to one finger on the screen at a time, with nothing blocking the IR sensors either.
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In my line of work, we use a touch screen similar to the new Sony's design: IR sensors in an array around the screen. It's always a funny joke with people new to the device to take a little piece of paper and wad it up into a tiny little ball, no bigger than a BB, and just set it in the corner of the screen. It blocks the IR sensors in that upper corner, but in the dark you can't see the little bit of paper, and even in daylight, to someone who doesn't know how the thing works, it just looks like a little piece of debris and you don't even notice it. But putting that little piece of paper there and blocking those upper sensors renders the entire screen useless. The new guy will poke and poke at the screen and will finally say, "This damn thing must be locked up." Someone else says, "Really? Let me see..." and quickly scoots the little bit of paper out of the way so the screen works fine. "Hmm, works fine for me, I don't know what the problem was." Then he scoots the little bit of paper back to the corner and the new guy still can't get the screen to work. Silly little prank, but it does illustrate with these new readers from Sony that if you let any dirt or other debris get caught in the corners of the device and block any of the IR sensors, the entire screen will act like it's locked up.