I don't want to sound pessimistic, but you won't see FTIR in any devices anytime soon... The technology is based on 2 things :
1. IR camera
2. Back projection
Basically to make it work you need to film the screen from a distance using an IR camera. You cannot currently embed this technology in a small device. It is possible to have other types of multitouch technology in a small device, but not FTIR.
Also, this is not currently available commercially and I doubt it will any time soon. While it doesn't cost a lot to make such a system (I am currently building one at University) it is not practical, it's big and not portable. For something commercial along those lines check this :
www.jazzmutant.com pretty expensive though.