Soon after shooting dead Osama bin Laden, one of the US commandos took out a camera and clicked the al Qaeda leader's picture. This was promptly uploaded and sent to analysts to confirm that it was indeed the world's most wanted man, a media report said.
New York Times reported that a member of the US Navy Seals clicked Osama's photograph with a camera and sent it to analysts who fed it into a facial recognition programme to help identify him.
Though one of Osama's wives identified his body, the photograph taken by the commando and processed through facial recognition software suggested a 95% certainty that it was Osama.
DNA tests found a 99.9% match, the media report said.
Osama was killed by US crack commandos who swooped into Pakistan's Abbottabad city where the al Qaeda leader was hiding in a massive mansion.
When Osama resisted, he was killed with a single shot to his head. He was later buried at sea.