Hi — I built slock, a small macOS menu bar app that connects two people through their capslock lights.

Hold capslock on your Mac, and the other person’s capslock light turns on. Let go, and it turns off.

That’s all. A tiny way to interact someone without opening a chat window. Invent a blink language, try Morse code, or just bother someone who agreed to install this with you. If you both opt in, the same key also becomes a push-to-talk walkie-talkie.

It’s open source: simple Swift, end-to-end encrypted, no accounts, no analytics.

While it’s running, capslock takes a break from capitalizing things. Pause it to get your old capslock back.

Please enjoy this very elaborate way to blink a light.

Thank you for checking out my little project!