An experimental algorithm tested out in Facebook´s artificial intelligence lab can recognize people in photographs even when it can´t see their faces.
"There are a lot of cues we use. People have characteristic aspects, even if you look at them from the back. For example, you can recognize Mark Zuckerberg very easily, because he always wears a gray T-shirt," the social network explains.
Facebook researchers last year said they designed a facial recognition system which is able to identify people accurately 97.25 percent of the time. The new algorithm identifies individual people´s identities with 83 percent accuracy.