its technology implemented for the sake of implementing it. to give something new to sell for the manufactures of screens and monitors, just like the motivation for something new to sell after the dvd specification had been in for a while. the manufacturers agreed they needed something new , and hi-def was born, and so was a new era of revenue.
i cant imagine how many times i may have to wipe down the screen from all the finger marks and smudges too.
its not like we have been crying out for a new way to interact with a computer , and this comes along as a well needed saviour in technology, its just something extra that's not really needed, but can maybe co exist in some small area of industry or something.
you cant say this will work in large screen computer monitors just because it works with your phone,, the usability gap is large , and its just like trying to introduce a mouse into using a phone as it is to introduce touch screens into desktop computing.
there isn't a need, things work great as we have them, nothing wrong with a mouse, its still a needed piece of technology , and it works.