Zone

A shared phone for people who are not in the same room: enter a room code and several phones behave like one device.

• Hand-written real-time engine: NTP-style clock offset, presence decay, playback correction and resync, tested as pure logic before any player is attached.
• Room state split into durable, session and ephemeral tiers over a small Node.js WebSocket server.
• Home-screen and lock-screen widgets on iOS and Android. R&D prototype.