The All-in-One Card. One geek’s dream concept of a Sun powered (literally and figuratively!) credit card thin PDA. Before you dismiss it as total fantasy, just remember how far we’ve come in only a few years in terms of portability and functionality.
It only needs a small processor that does nothing but send the touch and other inputs to a server, and the server sends the display and sound back. Since all the storage is on a server, it gives you virtually unlimited storage for your data, pictures and songs.