Your cellphone to report radiation in your area?

Scientist at Purdue University are working with the State of Indiana to create a network using existing cellphone users that would report back to a data center any radioactive activity in a users' area. The idea is that they could track radioactive substances that could be used in terrorist attacks as they pass multiple cellphone users while transporting radioactive material.

While I think that it is a novel idea, in part, I find myself more worried about the possibility of the government making it mandatory for cellphones to come equipped with the required hardware, which is supposedly very small and lightweight. Whereas I am all for catching terrorists who are trying to blow up my neighborhood, I'm not sure how I feel about being forced to do it. We could eventually find ourselves being subpoenaed when our phones report we've been close to radioactive substances.

Since your cellphone always reports where it is, the system would measure the strength of the radioactive signal versus that of other cellphones around you to pinpoint the location of radioactive sources and track their movements.

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