Now you can detect and distinguish between methane, ammonia, chlorine gas and other chemicals, thanks to the NASA Homeland Security Cell-All Program. NASA has created an iPhone application that acts as a chemical sensor. It uses a silicon-based sensing chip with sixteen nanosensors to sniff small amounts of chemicals.
The chemical-smelling application from the NASA Homeland Security Cell-All Program could be used to acquire early information about a chemical attack, confirm suspicions of methane emissions from local factories, or just give users information about the chemicals present in their daily environments.
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