The rCard is the size of a credit card (3.5 inches by 2 inches) and just over a tenth of an inch thick. It has its own navigation button and viewing screen and supports AVI, MPEG, MP3, WAV, Flash and Quicktime files. The battery can last for up to four continuous hours of use.I like the idea: now I don't even have to go to meetings anymore; I can just send my card. This may be useful if only to answer the question one inevitably asks when one finds a business card in one's desk: "Who was this guy again?"
Ah, but wait 'til e-paper business cards hit the streets. Woo hoo!