At the moment Trimensional (a mobile device 3D Scanner) is only available on the iPhone 4 and iPod touch 4th Gen. The main reason it's only currently on these two devices is because the way it works is that while the screen of the mobile device faces you it flashes some fancy lights at you while you stare unmoving at the front-facing camera in a dark room (try not to creep everyone out who lives with you, unless you want to).
I saw this 3D scanning application mentioned initially on my feed from the Smithsonian 3D Digitization page that I "like" on Facebook. It was only 99 cents, so I figured it wasn't a big monetary risk to try it out. It was pretty entertaining if not with wonderful accuracy (above is a less than flattering low-res 3D scan of me). But hey, it just came out and the creator himself said he's going to pimp it out a lot more as time goes by. I'm sure most of you reading this blog want to know how these 3D scans apply to 3D printing. There are export features in the works, go to the end of this blog for more info on my email exchange with the creator of this app.