Startup Idea: Simplified Video Chat for Elderly & Youngsters

Startup idea to develop a user-friendly video chat software that helps the elderly and very young children communicate seamlessly. The system needs to be foolproof and easier than existing solutions, with features such as call restriction and multi-user support.

I work in the technical sciences industry but this is for something else. I need a software that would allow my aging mother to video chat with her grandchildren--not Skype or Facetime, because both are too challenging for both my mother and her very young grandchildren to use. I need something that both could just click on without having to know anything else. The kids could just touch an icon on their Kid phone (a picture of grandmas face) that would call grandma, then grandma just just click on the answer feature and then the two could start talking. The whole system would have to foolproof and much easier than the stuff that is out there now. Also, it should allow for multiple pictures so the kids could all or answer different grandmas and grampa's (and pictures of the different grankids on the grandparents phones). There should also be a means for not allowing the kids to send or receive calls to or from anyone that has not been set up for them. I don't think there is an app that does all this, but if there were, I would buy it.