The South Wales police department managed to convict no less than 11 drug dealers based on fingerprint data collected from a WhatsApp photo.

As part of the investigations, cops seized and examined a phone used by one of the suspects, only to discover a photo that was sent on WhatsApp and showing just a part of a man’s hand holding what seemed to be ecstasy tablets.

Police officers then compared the fingerprint in the photo with the one of the suspect to discover a perfect match and then expand the investigations to eventually convict 10 other people.

Furthermore, after closely inspecting the phone, which apparently wasn’t protected by a password, police found several messages which indicated the owner was involved in selling drugs.

“It had a number of texts such as, ‘What do you want to buy?’ on it,” Dave Thomas of South Wales Police told the BBC. “There was then the photograph of the hand holding pills that…