Frequency Monitor Plug your EMF Explorer into your computer and see what frequencies it’s hearing! This web app is a companion to the EMF Explorer Badge by Darcy Neal . To use it, connect your EMF Explorer Badge to your device using a 3.5 mm TRS → USB-C microphone input cable. Then start exploring! Note: This app requires microphone access. Your browser may prompt you to allow this. No audio is recorded or transmitted; the app only analyzes the frequency spectrum of the signal from your badge. Start Exploring I don’t know what’s over there around the corner. But I want to find out.