And its competitors, such as Microsoft and Samsung, have used facial recognition for years to unlock phones. You may have heard in passing, however, that facial recognition technology has had problems. Wearing a baseball cap or even makeup can hinder some sensors from recognizing your face, experts said. But there's one concern about facial recognition technology that may not be resolved by a depth-sensing camera: privacy. Apple has focused heavily on developing facial recognition technology in recent years.

Source: Washington Post February 22, 2017 20:26 UTC