Wrapping ones prostate in these things might shield it... or there's always traditional tin foil.
Some typos in the article:
We have come up with a new way to power the electronics systems of the future — by harvesting Wi-Fi energy in a way that’s easily integrated in large areas — to bring intelligence to every object around us.
I think they meant bringing "surveillance" rather than "intelligence".
Mmmmm-hm. I'm running my refrigerator off my neighbor's wi-fi.
edit: with an antenna dangling from my butthole.