No idea, but they certainly should have. I’m no boffin I’m afraid, but I imagine your grandchildren would need a vr180 camera and could stream or upload the feed to a secure connection to you. You would just need the headset and good internet.Do they have such an application, something that works that far away?
I would take it that he wants to see his grandkids, rather than them see him? Presumably he could have two way audio but one way video? So the kids are playing normally and grandads able to watch.Also you wouldn't see each other's faces, because you'd all have great big headsets on, which kind of defeats the point doesn't it?!