In the old days, you’d have to go to a lot of trouble to inhabit another person’s skin. Today you can simply buy a customisable 3D avatar from Turbosquid.com, animate it with your own movements by wearing a sensor-filled motion-capture bodysuit, and presto! Lifelike but eerily soulless, Ed Atkins’s video portraits occupy a strange visual hinterland between computer-game graphics and deepfake realism.