Smartphone sensor could detect toxic chemicals

Our smartphones can already surf the Net, take photos and videos, play games, and even make phone calls, so why not... have them smell the air? That what America’s Homeland Security Science and Technology Directorate would like to see happen. The Cell-All initiative would see cell phones equipped with a sensor capable of detecting deadly chemicals. In the event of a terrorist chemical attack, the device could conceivably save numerous lives.

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