Doesn't change the question. How can it follow you, when you...

Doesn't change the question. How can it follow you, when you have to keep facing it? If it can't see you in selfie mode, it hibernates in mid-air.

""You don't need a controller," Ian Duffell, Executive Director at IoT Group explains to Gizmag. "Once you do the facial recognition on the phone you just set the Roam-e to follow you at a given distance. It doesn't need to be tethered, it is tethered to your face."
This sounds simple enough, if not a little confronting, but does mean that the user will need to remain facing the drone for it to continually track them. In the event that they turn away, the drone will stay hovering in place."