Keen: Deepfake Detector

Can you trust what you see? Deepfakes and AI-generated images have reached a quality where human eyes can no longer reliably tell the difference. Keen is your on-device sovereign shield — a real-time detector that analyzes any screen or image using 9 independent AI signals, 100% offline, with zero data ever leaving your device. ─── HOW IT WORKS ─── ▸ SCREEN SCAN — Tap the floating eye icon on any screen. Keen captures frames via Android's API, runs multi-signal analysis, and delivers a verdict in seconds. Drag the icon anywhere. Drag to the bottom to dismiss. ▸ IMAGE ANALYSIS — Share any image directly to Keen from your gallery, browser, or any app. Keen runs a 5-crop ensemble analysis and returns a detailed breakdown. ▸ VERDICTS — ORGANIC (real), AI GENERATED (fake), LEANS AI, LEANS ORGANIC, or UNCLEAR with directional context so you always know what the signal means. ─── 9-SIGNAL DETECTION ENGINE ─── Keen doesn't rely on a single model. It fuses 9 independent signals: Deep Scan mode adds: rPPG heartbeat detection, texture optical flow, and blink rate analysis. ─── SOVEREIGN PRIVACY ─── Keen has NO internet permission. It is physically incapable of sending data anywhere. ✓ Zero network access — enforced at the manifest level ✓ No account, no login, no sign-up ✓ No analytics, no crash reporting, no telemetry ✓ Scan history stored in AES-256-GCM encrypted local storage ✓ All inference runs on-device using ONNX Runtime for Android Your scans are yours. Always. ─── PERMISSIONS EXPLAINED ─── • Display over other apps — required for the floating overlay (you control when it's visible) • Screen capture — only active when you tap to scan; you approve each session • Biometric — optional, used only to unlock your encrypted scan history ─── SENSITIVITY CONTROLS ─── Choose your scan depth: • QUICK (8 frames) — fast check for obvious fakes • STANDARD (16 frames) — balanced speed and accuracy • DEEP (32 frames) — maximum confidence, includes video-only signals ─── DESIGNED FOR CLARITY ─── The Sovereign HUD delivers results in a military-grade dark interface. No distracting UI. No subscription prompts. Just a clear verdict with confidence score and signal breakdown. ─── WHO IS KEEN FOR? ─── ✓ Anyone who shares or receives images/videos on social media ✓ Journalists verifying source material ✓ Professionals reviewing media for authenticity ✓ Privacy-conscious users who refuse cloud-based tools ✓ Anyone who wants to stay ahead of the synthetic media wave ─── FREQUENTLY ASKED ─── Q: Does Keen require an internet connection? A: Never. All AI runs locally. The app has no internet permission. Q: Does Keen store my images? A: No. Frames are processed in memory and immediately discarded. Only the last scanned item is showing in the app. Q: How accurate is it? A: The primary model achieves 92% accuracy on a balanced 56,000-sample dataset. Real-world accuracy varies with image quality and compression. Q: Does it work on videos? A: Keen analyzes individual frames. Use Deep Scan mode for video content to capture multiple frames over time. Truth is a right. Keep it sovereign.