Smart city, smart planet: Sensity is creating a billion-node network of global sensors — in street lights

There are over four billion street lights in the world. Almost all of them are high-intensity discharge lights that use mercury vapor or some other toxic substance to create light. All of them are powered, and most burn out every two years.
Now what if all these could become nodes on a sensor network spanning the entire globe?

Have we passed peak surveillance?

“These vendors are becoming our feudal lords, and we are becoming their vassals. We might refuse to pledge allegiance to all of them … But either way, it’s becoming increasingly difficult to not pledge allegiance to at least one of them.”