New technique ids substances, not just fingerprints

The technique to measure the chemical composition of a sample isn’ta new technology but, writing in Science, R. Graham Cooks has identified a variation that will allow crime labs to identify not only the identity of a fingerprint but also the ...Fingerprint Test Tells What a Person Has Touched New York TimesFingerprints prove more than just identity United Press InternationalAHN - eFluxMedia - The Associated Press - The Tech Herald