Police around the world have been using fingerprints to catch criminals for decades. Normally these fingerprints are lifted from surfaces or objects at the scene of a crime. Police in Wales recently used a photograph of a finger to catch and convict 11 drug traffickers. The process of using fingerprints from a digital photo is hailed as groundbreaking.

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Source: Hot Hardware – Police In South Wales Use Fingerprint From WhatsApp Photo To Catch Drug Dealer