Room Scan
BLE, Wi-Fi, GNSS, sensors, and audio cues sampled in one foreground session.
MayoFlux signal visibility lab
See the room's invisible layer.
Fieldveil is a passive Android field viewer for the Wi-Fi, Bluetooth, GNSS, audio, sensor, NFC, UWB, and SDR signals your phone is allowed to observe.
Debug preview for Pixel-class Android. No analytics. Local labels stay on-device.
Foreground scans Public Android APIs only
Direction assist Stronger-this-way RSSI sweeps
Private by default No cloud sync or payload capture
Product direction
Not a spy tool. A live instrument panel for ambient signals.
Fieldveil turns the phone into a visual dashboard for observable fields: BLE advertisements, Wi-Fi scan results, GNSS fixes, sensor changes, NFC taps, microphone spectrum, cellular diagnostics, and optional receive-only SDR hardware.
Signal lenses
Swipe through the waves your phone can legally see.
Direction Assist
Manual sweep mode records the heading where RSSI was strongest for labeled devices.
Studio Cues
Beacon thresholds, NFC prop taps, cooldowns, webhook and local cue testing for owned rigs.
Privacy Checklist
Hotel-room walkthroughs with careful language: useful clues, never guaranteed detection.
Hard boundaries
Designed to show, not exploit.
- No packet sniffing, deauth, spoofing, jamming, replay, MITM, password attempts, or private payload capture.
- No person identification, stranger tracking, owner inference, or claims that a signal proves someone is carrying a device.
- No access-control, lock, payment, venue-system, or private-infrastructure bypass features.
Current build
Fieldveil 0.2.3-dev
This is a debug-signed development APK for sideload testing. Allow installs from this browser on Android, or install through Android Studio/ADB.