Lightsync

This live demo of Lightsync was performed at Centre in the Square with an audience of 2,500 people. There was no audience preparation beforehand and the demo ran entirely on cellular data, in a packed venue.

Lightsync was created by the creator of beatsync.gg, a browser-based audio player for multi-device audio playback. Beatsync has been used by over 1.2M+ users and handles ~2K concurrent users a day.

• Fully software-based. Requires only wireless connectivity and a browser
• Connected devices are automatically synchronized to each other, and within milliseconds of latency
• Allows arbitrary creative design of an interactive audience light show, where every phone screen is a programmable node.

1. A creative director programs the light show ahead of time, choreographing color, brightness, and timing for each phone screen or in aggregate.
2. At showtime, the audience scans a QR code or enters a URL to join the Lightsync session in their browser.
3. Each device synchronizes its clock to the central Lightsync server over the network.
4. The choreographed lightshow unfolds in unison on every screen, turning the crowd into one interactive display, synced to music.