About year or more ago when Kobo touch was fairly new and many users were complaining about poor PDF support I told a Kobo person on this forum that was posting here that same IR touch system used by Kobo was also used by Sony T1 with pinch zoom and included links to the the IR touch company's demo of their pinch zoom in action. The Kobo person seemed surprised by multi touch capability.
http://www.youtube.com/watch?v=n5PEEuRa5tU
http://www.neonode.com/zforce%C2%AE-...-rave-reviews/
http://reviews.cnet.com/8301-18438_7-20021924-82.html
http://www.digitaltrends.com/mobile/...sture-control/