ZeroTrace Mobile
Echo in the App
Capture, decode, brute-force and defend across sub-GHz RF, screen by screen.
Echo in the app
Echo has no screen and no web page, you drive it entirely from the app over Bluetooth LE. Connecting an Echo opens a sub-GHz workbench with its own tab bar: Live, Capture, Decode, Brute, Defense, Ops, Settings.
Live
Live watches sub-GHz activity in real time as Echo listens across the band.
Capture
Capture records signals for analysis and replay, the raw material for everything else in the app.
Decode
Decode is the reverse-engineering workbench: pull apart a captured signal, identify its structure, and understand what it's saying. This is where fixed-code and rolling-code analysis happens, and where a Flipper Zero .sub file can be imported for analysis alongside Echo's own captures.
Brute
Brute is the brute-forcer for fixed-code signals, exhaustively testing a code space against a target.
Defense
Defense is Echo's counter-surveillance toolkit:
- Jamming detection — flags RF jamming in progress.
- Jam-and-replay flagging — recognizes the RollJam pattern, a jammed signal captured then replayed.
- Remote reappearance alerts — warns you when a remote matching one you've already seen shows up again.
Ops
Ops is the wider toolbox beyond the main tabs:
- Analyzer — an RSSI sweep across the band.
- Sensors — passive listening for TPMS, weather-station and alarm-sensor traffic.
- Library — Echo's signal library, browse and manage saved signals.
- Rules — RF automation, trigger an action when a matching signal is seen.
- Mesh — Echo-to-Echo device-to-device messaging and find-my, not an AI feature, just direct RF communication between Echo units.
- Remotes — saved remotes you've captured and classified.
- Sightings — a log of when and where signals were seen.
- Site survey and field map — mapping RF activity across a location.
- Protocol builder — construct a custom protocol definition for a signal Echo doesn't already recognize.
- Sub viewer — inspect imported
.subcaptures. - Gate audit — a structured check of a gate or garage remote's rolling-code hygiene.
- Sequence, rolling reference, cases, dex, hunt, audit remote, panel, calibrate — supporting tools for building out a case file on a signal over time.
Settings
Per-device settings for the connected Echo. See Settings.
Off-bar screens
- About and Diagnostics — firmware version and device health.
From the app you can reboot a connected Echo and pull its logs. There is no format, self-destruct or BLE-peers view exposed for this family from the app.
Echo's capture and decode are passive, they only listen. Rolling-code security is captured and classified only, never defeated. Use the transmit-capable tools only on equipment you own or are authorized to test. See Echo safety & legal.
Full capabilities
For the complete detail on what Echo captures and decodes, see the Echo section: