At the moment the specs for all the Pico projectors look the same, and with at best 12 lumens you don't get a very large useful image unless the room is very dark. I see a potential though, as the portability (pocketability) of the technology is seductive.
We spent a year trying to find an affordable laptop to power a projector where I work, but thinking small ended up using a Sansa View to drive the projector. In testing it's composite video output handled photos and video better than the VGA output of two netbooks we evaluated. The Projector is a small but powerfull Dell model, but it is still far from pocketable.
Samsung will be bring out a cell phone and seperate PMP with projector onboard later this year. Once the "market" comes up with a nice screen that is also pocketable, the tradition of dragging a laptop and bulky projector to conferences may fade away. Or at least limiting projected presentations to large venues will go away.
I see individuals sitting in my university food court with a notebook PC open for study or entertainment. Now imagine a front/rear projection screen pulling diagonally up out of the center of each table. Now everyone seated there can enjoy a Youtube video from your iPhone, photos of that party last night, etc. The personal technology becomes social, and still fits in your pocket.
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