FrameSaver is a multi-user web app that streams curated, commercially safe imagery to any screen: national parks, observatory and NASA space photography, museum open access art, landscapes, architecture, and more.
Users sign in, pick a category or their own uploads, and start a full screen screensaver with attribution overlays. TV login is phone first: the TV shows a QR code, you scan it with your phone, enter a 6 digit code from your email, and the TV authenticates itself with no typing on the remote.