Ubiquitous wireless networking does more to create a nano-sensors everywhere future than cheap supercomputing. Micro-controllers have had more than enough computing power to tell me the temperature in the back yard with battery power for decades now. It was sending the data anywhere usefull that was hard.

As little as 2 years ago, $50-$75 was about the cheapest I could put a project on the internet, wired or wireless. Today its about $5. You can buy the whole little computer in the form of a TP-Link router running OpenWRT for about $22.

I have seen the future and its made of wifi.