I haven't used one of these myself, but from my experience with regular video calls (and a mention in the article), a killer feature will be some way for the ro

I haven't used one of these myself, but from my experience with regular video calls (and a mention in the article), a killer feature will be some way for the robot operator to maintain eye contact without having to fake it, i.e. looking at the camera instead of the screen. Googling brings up some rumors about devices with cameras hidden behind the screen, especially an Apple patent from 2009... but even if the tech doesn't pan out, I bet you could fake it pretty well in software if you have multiple cameras on different sides of the screen.