Show HN: Interactive Three.js demo lets users illuminate a hidden figure in darkness

A new Show HN entry showcases a Three.js experiment titled “Find someone in the dark”. The interactive demo lets users illuminate a hidden figure or the viewer themselves. The project is hosted on GitHub under the repository skorotkiewicz/signal-in-the-dark. It demonstrates real‑time lighting effects within a 3D scene. The author invites feedback from the Hacker News community. The code is open source and can be forked for further development. The demo runs directly in web browsers without additional plugins. The repository was shared on July 18, 2026.