We've seen phones with built-in projectors before - remember those, right? - but none quite like the Lenovo Smart Cast.
Lenovo is the first to feature a built-in laser projection keyboard, meaning you can interact with the projection via touch just like a real screen. Or simply use it as a mini tabletop projector.

So is the Smart Cast touching upon the future of tech or is it a mere gimmick?
We've been playing with one at Lenovo Tech World, the Chinese company's first product showcase, to get a feel for it.

Front-on the Smart Cast doesn't look particularly unusual: it could well be any normal smartphone found in many peoples' pockets. Until you flip it over and see the stowed kick-stand around the camera lens. The device's thickness tapers to accommodate the projection system too, but thanks to using the world's smallest laser projection module it's not a giant slab of phone by any means.
In this standard form, known as "front mode", the Smart Cast can be handheld and used to project onto a wall. Without some kind of makeshift stand there's no sensible way to mount the projector for a fixed image. But it's in this mode it shows off one of its quirkier features: interactive control.

Perhaps the more interesting feature is the "table mode" and its laser projection keyboard. After flipping the mirror module around - it doesn't lock in place and easily rotates 180-degrees around - and pulling out the kick-stand the Smart Cast was ready to roll.
We tried to examples here: typing out a text message on the projection image and opening a piano app to tinkle on those virtual ivories. Now it's fun, no doubt, but less practical than using the phone's screen within relevant applications. Which is the very definition of a gimmick.

http://www.pocket-lint.com/news/134042-lenovo-smart-cast-projector-phone-fun-and-gimmicks

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Hmmm....technology these days ehnn