It is an open-source, zero-latency P2P monitor. Hardware reuse: You can repurpose an old phone or tablet to be the child unit instead of buying single-purpose hardware. Actually private: Unlike using a never-ending Google Meet or Zoom, your stream stays private via WebRTC (PeerJS for signaling). No cloud routing. The backgrounding hack: Mobile Safari aggressively kills background audio. I used a hidden 1x1 base64 looping video to keep the microphone active when the screen dims.

Links: Live Demo: https://legodud3.github.io/kgbaby/ Repo: https://github.com/legodud3/kgbaby

Welcome all feedback!