Introduction
A keychain sub-GHz RF tool that captures, decodes and defends, driven from your phone over Bluetooth LE.
Welcome to ZeroTrace Echo
ZeroTrace Echo is a keychain-sized sub-GHz RF tool. It listens to the short-range radio traffic around you, garage and gate remotes, tyre-pressure and weather sensors, alarm contacts, decodes what it hears, and shows it on your phone in real time.
Echo has no screen and no web page of its own. You drive it entirely from the ZeroTrace mobile app over Bluetooth LE, with a single colour status light and one button for use away from your phone.
Its purpose is deliberately defensive. Echo listens: it detects jamming, flags jam-and-replay (RollJam) patterns, and warns you when a remote matching yours reappears. It never breaks rolling-code security, rolling-code remotes are captured and classified only, never defeated.