A group in NYC have been experimenting with feeding live video and audio to local cable TV from laptops on public wifi networks. They point out that battery life on both digicams and laptops is a crucial limiting factor in their ability to do this for real. Seems to me that battery technology is on the critical path for most applications of pervasive mobility — it’s difficult being a pervasive node if you have to ration on-time of your device so carefully.
