Efforts since 9/11 to prevent the detonation of a dirty bomb—an explosive devices have been designed and are being designed. And each of then cost an arm and  a leg. In the run-up to the Olympics, China bought many detectors, at $27,000 each, from the Beijing firm RAE-KLH Technologies to check people and vehicles entering the Olympic Village, airports and other venues. And still each of devices that certain limitations. And to solve that comes the Perdue University. The Purdue team is designing a detection system that’s so small it could fit into cell phones. The project, known as Distributed Nuclear Detection by Ubiquitous Cell Phone, would help locate dirty bombs or nuclear weapons by “triangulating” the source of radiation when people carrying mobile phones pass by. (The greater the number of equipped cell phones, the greater the precision: phones closest to radioactive material would register stronger signals.) And the as you can tell by the post title , they are testing the prototype on the PDA devices such as blackberry. I guess it will be cool to have a radiation detection in my phone, CSI me this time :)

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