Four NCSU students have invented an unusual nail polish that can detec

August 25, 2014 3:20 AM

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Four NCSU students have invented an unusual nail polish that can detec

New York: Students from an American University have invented a unique nail polish that can detect "date rape" drugs in a drink.

A woman wearing this nail polish - named Undercover Colours - just needs to stir the drink with her finger and if the nail polish changes colour, she will know that something is wrong.

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