[citation][nom]freggo[/nom]How many LCD displays will get damaged by using too much force on one of those?I can see less computer literate, but ill-tempered users with a pointy object going after a slow updating screens/websites that way.[/citation]
Most stylus aren't nearly strong enough for someone to punch one through a screen. And even if they could, that rate at which it would happen would probably be about the same as anyone else using a stylus based device and doing the same, which I've never heard of.
I think it's a promising idea. It could save some people a lot of money over upgrading to touchscreens. I recall a few years back a company trying to make a device that would make any monitor a touchscreen. It used a pair of sensors to track the size of the screen and the location of a hand relative to that screen. I don't remember that idea gaining a lot of traction, however. I would love to know what happened with that one.