# Control your Mac by knocking on the desk (iPhone accelerometer) > Source: > Published: 2026-11-04 22:18:41+00:00 🤯 I wanted to use my iPhone's sensors to control my Mac in a way I hadn't seen before. Claude helped me build this, I called it Desk Knock The phone sits on the desk, picks up the tiny shake when I knock, counts the knocks and sends them to my Mac over Wi-Fi. No app, just a Safari page. 2 knocks = pause 3 = next 4 = screen off