How to auto-answer video calls for telepresence/baby monitor/pet cam?

I would like to leave a tablet on my shelf and be able to video call into it while away and talk/hear/see my home without anyone necessarily being there, just to be able to check in. I have looked for auto-answer settings in Skype and Hangouts. The situation is that I have a baby I'm going to leave in my home with her grandmother, and other sitters and relatives, and I don't want to have to teach them except to say that I'll check in via video sometimes. This way I shouldn't ever disturb the peace with phone ringtone sounds, nor have to wait for someone to pick up, nor have to wonder why they didn't pick up. Skype has auto-answer, but it doesn't turn on video from the receiver. What else can I try? I haven't installed *everything* in the Play store…