Smartphones can have around 18 or so sensors.  Using Bluetooth you could other sensors.  Maybe like the movie “Dark Knight” Batman used cellphones as sonor devices to detect the surrounding environment.  Kind of scary.  How did he do that?

In today’s world, tying cellphones together in a large sensor net would be difficult if not impossible, so the scenario isn’t so scary.

But let’s think about this for a few minutes or for the attention deficit a few seconds

The paper at: http://research.microsoft.com/en-us/um/people/kansal/papers/kansal_ipsn07.pdf

Now the paper is somewhat limited, but it does start the discussion about the sensor nets using cellphones

Phone sensor architecture might look like:

image