Finger prints!!!!
After a short amount of use in a lit room they stare back at me. Try this... I went to Office Max and got a PDA stylus and at 3 for 10 bucks you can afford to lose a couple in the couch. And with one of these babies you could turn off the keyboard ZOOM (if that were possible). May be one more thing to loose but it keeps it clean and its safe "manual "or use blunt pen cap"".