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>> reporter: the chemical can last for years on clothing. police are using it in stings. store owners are using the spray as a booby trap over their doors. any one who wants to protect their valuables like a watch or iphone can just mark them with the paint. if stolen and found the dna like fingerprint on the chemical can help police find the owner. this has led to a lot of convictions worldwide hasn't it? >> yes, in fact, over 1,200 in the uk and europe alone over 17 years. >> and other companies are developing similar chemicals, it's so new to the u.s., law enforcement agencies are just now ...

To record data on this sliver of quartz. the data is recorded by f.m. tow seconds later this laser emits pulses of around one billionth of a second. the pulse creates perfectly formed microscopic dots a dot for zero and another dot for one in binary code. dozens of dots can be recorded at once. the information is embedded in the layers so it's unaffected by dust or scratches. another advantage of course it's transparency means the information can be read by any microscope.