http://tinyurl.com/p866lsx) shows a conceptual handset from Lenovo, with an integrated focus-free laser projector. As well as showing films, photos and so on, the ‘Smart Cast’ smartphone can use its projector to show a virtual touchscreen or keyboard on whatever surface it is placed next to. The projector cap at the top twists round, and a kickstand folds out, to enable this mode.
A video posted to YouTube (