I have a vision of what mobile devices will be like in the future. I suspect universities, airports, and coffee shops will deliberately put up white walls in certain areas to serve as projection screens for mobile devices. Who wants to look at a tiny two inch screen when they can project on a wall. I've always pictured this day as far off in the future but now I'm ready to believe that we could be there in as little as five years.
Time magazine's top gadget for 2008 is the Optoma Pico PK-101. This is a quality projection device about the same size as an iPhone. It is designed to be used with an iPod to project video on a wall. Combine this with another device not much different in size than an iPhone, a laser virtual keyboard, and you turn a mobile device into a system that is as easy to use as a laptop and fits in your shirt pocket. This is where I believe mobile devices are heading.
The devices I've referenced can be bought today at stores like Think Geek and Amazon.com (Optoma/Keyboard). Of course there is still work to be done to bring down the size and combine them into one device but I don't have much doubt that this can be done.
Projector + Virtual Keyboard + iPhone/Blackberry = Mobile Future