Facial recognition – a powerful ad tool or privacy nightmare?

It may sound like science fiction but tech that identifies VIP shoppers could soon be used for customer loyalty schemesWhenever the future of advertising is discussed, thoughts often turn to the sci-fi image of a stalked Tom Cruise in Minority Report being recognised and served intrusive, personalised advertising as he tries to escape a futuristic city.Hence, recent claims by Russian app FindFace that it could identify people in public by their profile picture on a Russian social media site were