MINERVA TAK

MINERVA TAK is an Android application for tactical coordination of outdoor teams: airsoft, paintball, hiking, civil protection training, LARP events, prosumer training and field operations. ━━━ MAIN FEATURES ━━━ 🗺 TACTICAL MAPS • MapLibre vector engine with 3D terrain • Offline maps (OSM, satellite) for operations without connectivity • Coordinate formats: UTM, MGRS, DMS, WGS84 • NATO APP-6 symbology for waypoints and markers • Multi-waypoint routes with elevation profile • Custom geofences with entry/exit alerts • GPX and KML import/export 💬 CHAT AND MESSAGING • End-to-end encrypted text chat (E2E) • X25519 encryption via Google Tink • Group chat and direct messages • Encrypted geolocated photo sharing • Push notifications via Firebase 📻 PUSH-TO-TALK (PTT) • Zello-style digital walkie-talkie • Encrypted voice channels via LiveKit SFU • Activation via device physical volume key • Floor control coordinated via Firebase Realtime Database • Foreground service for background use 🛰 MESHTASTIC INTEGRATION • Native connection to LoRa Meshtastic radios via Bluetooth • GPS position exchange over mesh radio • Offline text messaging without internet or cell coverage • Dedicated icons for contacts reachable via Mesh 📡 SCREEN STREAMING • Live screen sharing to other operators • Picture-in-Picture during map navigation • Based on LiveKit SFU 📍 LOCATION TRACKING • Real-time GPS sharing with team members • Foreground service for continuous tracking even in background • Tracks saved locally and exportable as GPX ⏱ TACTICAL TIMERS • Local countdown timer with vibration/tone alarm • Coordinated team timers synchronized via server • Floating widget above the map ━━━ SECURITY AND PRIVACY ━━━ • Chat, waypoints, routes, geofences, notes, photos, audio: everything end-to-end encrypted • Local database encrypted with SQLCipher (AES-256) • No operational data readable by the server • No advertising tracking, no profiling, no third-party sharing • Registration via Google Sign In (verified) or email address • Maximum 3 devices per email ━━━ ACCESSIBILITY SERVICE (Hardware PTT) ━━━ MINERVA TAK uses the Android Accessibility Service in a limited, disclosed way to enable the physical Volume Down key as a Push-to-Talk (PTT) trigger when the screen is off or locked. What the service does: • Detects ONLY presses of the Volume Down key (KEYCODE_VOLUME_DOWN) • Starts PTT transmission on press, stops on release • Operates with screen off (operationally required for tactical voice comms) What the service does NOT do: • Does not read screen content • Does not capture other keys or user input • Does not access data from other apps • Does not collect, log or transmit any personal data • Does not modify system settings Why it is needed: no alternative Android API can detect hardware key presses when the screen is locked. The Accessibility Service is the only technically available path for a screen-off physical PTT button. Opt-in and control: the service is strictly optional. The user must manually enable it in Settings → Accessibility → MINERVA TAK, and can disable it any time. PTT remains usable without the service via the on-screen button or a compatible Bluetooth microphone. MINERVA TAK does NOT use the IsAccessibilityTool flag (not an accessibility app for disabled users). ━━━ EARLY ACCESS ━━━ MINERVA TAK is distributed free of charge in Early Access until November 30, 2026. At the end of the period the service will evolve: the terms and conditions of the next version will be communicated via email to registered users with reasonable advance notice. ━━━ REQUIREMENTS ━━━ • Android 8.0 (API 26) or later • Internet connection for registration and cloud features • Bluetooth (optional) for Meshtastic integration • Active GPS for position sharing ━━━ CONTACT ━━━ Privacy Policy: minervasage.com/tak/privacy Terms of Service: minervasage.com/tak/terms Support: [email protected]