Cell phone sensors

I have discussed before on this blog about the use of mobile phones to act as sensors, for such things as radiation and bio-terror. This article from Physorg.com discusses how researchers at Purdue University are developing a system that would use a network of mobile phones to detect and track radiation to help prevent terrorist attacks with radiological "dirty bombs" and nuclear weapons:

Such a system could blanket the nation with millions of cell phones equipped with radiation sensors able to detect even light residues of radioactive material. Because cell phones already contain global positioning locators, the network of phones would serve as a tracking system, said physics professor Ephraim Fischbach...

..."It's the ubiquitous nature of cell phones and other portable electronic devices that give this system its power," Fischbach said. "It's meant to be small, cheap and eventually built into laptops, personal digital assistants and cell phones."

Read in full - 'Cell phone sensors detect radiation to thwart nuclear terrorism'
-