Any Android phone
Download the APK from GitHub Releases and open it to install. The first time, Android asks you to allow installs from your browser.
Release notes on GitHubPersonal electronic situational awareness
Protect the self.
Perceive the world.
Sotreus is a private instrument for the space around you. An Android app — with a pocket Edge companion — that shows what nearby electronics are broadcasting, remembers what you have encountered before, and adds airspace and orbital context.
Local-firstEvidence-firstContinuous observation
EO PASS · PREDICTED
AIRCRAFT · 6.2 KM · 4 S OLD
TAGGED · RE-ENCOUNTERED
WI-FI AP · FAMILIAR
NEW FINGERPRINT
YOU
OBSERVINGSCAN FRESH · 3 S
PLACE · OFFICEBASELINE · 14 VISITS
SENSEDNETWORKPREDICTED
21:39New BLE fingerprint observedSENSED21:41Tagged device re-encounteredSENSED21:42Aircraft crossed 6.2 km from session locationNETWORK21:44BLE fingerprint no longer observedSENSED21:51Compatible Remote ID broadcast observed · 312 mSENSED22:07Earth-observation pass begins · max elevation 61°PREDICTED
Download Now
Android App is LIVE. Install Now.
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Solana Mobile phones
On a Seeker or another Solana Mobile phone, install Sotreus from the Solana dApp Store, which also delivers its updates.
On a computer? Open this page on your Solana phone.
Install one build, not both. They share the package name com.sotreus.app but are signed with different keys, so neither can update the other.
01 / The visibility gap
The world is increasingly instrumented. The individual still lacks a dashboard for it.
Surveillance no longer has a single shape. Cameras, doorbells, trackers, access control, beacons, drones, vehicle electronics, building sensors and aircraft all add to an environment that is electronically dense — and hard to read.
The problem is asymmetry. Infrastructure can sense, log and correlate. The person moving through it usually has no comparable view.
Sotreus closes part of that gap — honestly, and only with what your devices can legitimately observe.
02 / How it works
Walk into any space. Get five answers.
Your Android phone is the first sensor. Sotreus observes nearby Bluetooth LE and visible Wi-Fi, learns what is normal for a place, and keeps the evidence on your device.
- 01
What is here?
How many radios and device families are visible right now.
- 02
What is familiar?
What matches this place, or devices you have already tagged as yours or expected.
- 03
What changed?
What is new, unusually persistent, or different from your previous visits.
- 04
What have I seen before?
Which tagged or fingerprinted entities have appeared somewhere else.
- 05
What is around or above me?
Nearby aircraft, drone Remote ID broadcasts and satellite passes — when you turn context on.
PLACEOffice
OBSERVINGHERE
42
radios · 7 families
FAMILIAR
31
match this place
CHANGED
3
new since last visit
SEEN BEFORE
1
re-encounter
ABOVE
8 aircraft · 1 pass in 30 min
NEEDS ATTENTION
Repeated cross-location re-encounter observed
Tagged “Grey tag” · Home, Café, Office
Camera-family signature observed
New in this place · confidence medium
Selected satellite predicted overhead
22:07 · max elev 61° · orbit data 3 h old
LiveMemoryPlacesJourneySky
03 / Encounter memory
A scanner shows you a list. Sotreus remembers.
The meaningful question is not only “what is nearby?” but “have I encountered this before?” Local memory turns a noisy stream of radios into something you can read.
Familiar
Matches this place’s baseline or a device you have marked as yours or expected.
New
Not seen in this place before. Most new things are ordinary — Sotreus simply notes them.
Persistent
Present for an unusually long stretch of a session, rather than passing through.
Re-encountered
A distinctive fingerprint seen again in a different, unrelated place.
INPUTS
Novelty
Persistence
Re-encounter
Known signature
Your tag
Context timing
ATTENTION SCORE
0.74
NEEDS ATTENTION
NOT A THREAT SCORE.
EXPLAINABLE EVENT
Repeated cross-location re-encounter observed
Your tagged device “Grey tag” was observed at Home, the Café and the Office this week. Signal history suggests proximity only — never direction.
CONFIDENCE · MEDIUM · VIEW EVIDENCE
04 / Context fusion
Look around. Then look up.
Electronic awareness does not stop at the walls of a room. When you choose, Sotreus places aircraft, drone broadcasts and satellite passes on the same timeline as your local observations — and never blurs where each one came from.
SENSEDDrone Remote ID
Observed directly by your phone or Sotreus Edge — BLE, Wi-Fi and compatible Remote ID broadcasts.
Remote ID broadcast observed
Drone altitude74 m
Horizontal distance312 m
Last message1.2 s ago
NETWORKAircraft / ADS-B
Reported by an external provider over the internet. Always shown with its source and data age.
Aircraft nearby · 8
Closest6.2 km
Lowest altitude2,900 ft
Data freshness4 s
PREDICTEDSatellite passes
Computed on your device from public orbital elements. Your location never leaves the phone.
Earth-observation object
Pass begins → ends22:07 → 22:14
Max elevation61°
Orbit data age3 h 18 m
One timeline. Three kinds of source.
Sotreus may say events overlapped in time. It will never say one caused the other. Temporal correlation stays temporal correlation.
- 21:39New BLE fingerprint observed
- 21:41Tagged device re-encountered
- 21:42Aircraft passed within the selected radius
- 21:44BLE fingerprint no longer observed
- 22:07Satellite pass overlapped this session
- Aircraft Tracking
- Satellite Tracking
- Drone Tracking
05 / Calm by design
Awareness without alarmism.
Sotreus does not promise to find every camera or tell you who is watching. It gives you evidence — radio signatures, recurrence, proximity patterns, known device families and changes in a place — and shows the source of each.
You decide what that evidence means.
| OTHER APPS SAY | SOTREUS SAYS |
|---|---|
| Needs attention | |
| Camera-family signature observed | |
| Repeated cross-location re-encounter observed | |
| Aircraft reported within selected radius | |
| Selected satellite predicted overhead | |
| Remote ID broadcast observed | |
| Nothing observable on supported bands | |
| Last observation · data freshness |
06 / Sotreus Edge
A pocket companion that keeps observing when your phone can’t.
Sotreus Edge scans, timestamps and stores on its own battery, then syncs to the app over Bluetooth. The app stays the brain. Edge becomes the always-on sensing layer.
ONE DEVICE · TWO PERSONALITIES
Edge Mode — the everyday default. Continuous or duty-cycled BLE and 2.4 GHz Wi-Fi observation, a local append-only log, optional GNSS, and no LoRa transmission.
SOTREUS EDGEOBS
BLE 128WIFI 23
NEW 4STOR 12%
BAT 81%GNSS FIX
MESH MODELORA
MESHTASTIC
NODES [N]
SENSING PAUSED
SOTREUS EDGEEDGE
0.96″ · 128 × 64 OLEDOBSERVING · LAST SYNC 2 MIN AGO
- COMPUTE
- ESP32-S3
- Runs Edge firmware, scan scheduling and secure app sync.
- BLUETOOTH
- Bluetooth 5 LE
- Observes advertisements and pairs with the app.
- WI-FI
- 2.4 GHz 802.11 b/g/n
- Visible 2.4 GHz access points. Not 5 or 6 GHz.
- LORA
- SX1262
- Meshtastic in Mesh Mode. Silent in Edge Mode.
- LOCATION
- Optional GNSS
- Anchors observations when your phone isn’t there.
- STORAGE
- 8 MB flash
- Append-only observation log with bounded retention.
- DISPLAY
- 0.96″ OLED
- Mode, sensor health, battery and scan counts at a glance.
- POWER
- Own battery
- Field power profiles, so your phone pays nothing.
The app gets more capable when Edge is present.
Honest boundary: Edge is not an ADS-B or satellite receiver. Aircraft context stays network-reported and orbital context stays predicted.
PROTOTYPE BASELINE · HELTEC WIFI LORA 32 V3
| PHONE ONLY | PHONE + EDGE |
|---|---|
| Observation depends on Android scan cadence and power policy. | Edge keeps its own schedule while the phone sleeps. |
| A journey can lose coverage when the app is constrained. | Edge keeps logging and syncs the full session later. |
| Phone location is the only location source. | External GNSS anchors Edge observations independently. |
| Battery cost is paid by the phone. | A dedicated battery isolates the sensing workload. |
| No LoRa hardware. | The same node switches to Meshtastic for off-grid comms. |
06 / Sotreus Wallet
A pocket key that shows the request before anything is signed.
Sotreus Wallet keeps signing keys in a secure element, shows the transaction or sign-in on its own screen, and waits for a physical press. Passkeys and one-time codes sit beside the wallet keys, under separate rules.
ONE DEVICE · SEPARATE KEYS
Wallet, passkey, and one-time code. Each has its own policy. An explanation can describe the request. Only the secure element, and the press you make, can approve a supported signature.
VERIFYREADY
BEFORE SIGNING
KEY IN SE050
USB · FIDO2
SOTREUS WALLETBACKOK
ESP32-S3 · NXP SE050E2 · USB-CREVIEW ON DEVICE → CONFIRM WITH OK
- COMPUTE
- ESP32-S3
- Transaction review, the screen, the buttons, USB sign-in, and one-time codes.
- ELEMENT
- NXP SE050E2
- Wallet and authenticator keys are created and kept in the secure element.
- DISPLAY
- Color screen
- The transaction or sign-in is shown on the device before you approve it.
- CONTROLS
- Back and OK
- Two buttons. A supported signature waits for a physical press.
- LINK
- USB-C
- FIDO2 to a phone, laptop, or browser. Bluetooth only where that path is supported.
- MEMORY
- 16 MB · 8 MB
- Target flash and PSRAM. Final parts depend on the exact secure element.
- IDENTITY
- Passkeys · OTP
- Passwordless sign-in, USB security-key 2FA, and on-device TOTP or HOTP.
- CHAINS
- Ethereum · Solana
- Supported transfers are checked. An opaque request is not signed.
V1 explains from the cloud. V2 can explain on the device. Neither one signs.
Honest boundary: proposed device. The exact secure element still has to be checked for the needed algorithms, key slots, and credential capacity. The chip alone is not a FIDO certification.
PROPOSED · ESP32-S3 + NXP SE050E2
| V1 · CONNECTED | V2 · SOVEREIGN |
|---|---|
| Explanations come from an internet-connected phone or laptop. | A compact model on the ESP32-S3 classifies supported transactions offline. |
| The secure element verifies the request and signs after you confirm. | Same signing path. Signed updates deliver models, policies, and decoders. |
| USB FIDO2, passkeys where supported, and on-device one-time codes. | Same hardware. A separate password vault is optional, and later. |
07 / Privacy + trust
Privacy is architecture, not a setting.
An awareness tool fails if it becomes another opaque collector. Sotreus is built so it can’t.
No account required
Scanning, memory, tagging and reports work without signing up for anything.
Local database first
No mandatory cloud. Your radio history and places stay on your device, with optional encryption at rest.
Context is opt-in
Aircraft and orbital feeds are modules you switch on. Local sensing works fully offline.
Your location, your call
Sky queries run in Exact area, Coarse area or Off. Satellite passes are computed without sending your location anywhere.
Share safely
Exports default to coarse coordinates, time buckets and hashed identifiers.
You set retention
Keep everything, keep N days, keep tagged only — or delete a place or session outright.
Protect the self. Perceive the world.
What is yours stays on your devices. What is around you is shown, and its source stays clear.
Sotreus never:
- DEAUTHENTICATE
- INJECT
- JAM
- EXPLOIT
- INTERROGATE
08 / Roadmap
From the phone in your pocket to a personal context graph.
- V1 · PHONE
Sensing, memory + sky
BLE + visible Wi-Fi · Encounter memory · Places + journeys · Aircraft, drones + satellite passes
- V2 · SOTREUS EDGE
Always-on companion
ESP32-S3 + BLE + 2.4 GHz Wi-Fi · Local storage + optional GNSS · Continuous observation · Mesh Mode via Meshtastic
- V3 · SOTREUS WALLET
Keys on the device
ESP32-S3 + SE050E2 · Ethereum + Solana · Passkeys + one-time codes · Review, then a physical press · EAL6+ security
- V4 · CONTEXT GRAPH
Personal context graph
Phone + Edge encounters · Wallet approvals · 360° physical and digital protection
“What is different here, what is around or above me, and have I seen any of it before?”
Sotreus answers with evidence, provenance, confidence, freshness — and restraint. The Android app is out now. Join early access for the first Sotreus Edge field units.
Follow progress on X · @netsepio