21:52

5G 98%

VaultBank Mobile ● Protected

TOTAL CHECKING VISA PLATINUM

$28,490.50

•••• •••• •••• 9241

RECENT TRANSACTIONS

💎

Emerald Security Ltd

Today, 18:30

-$2,450.00

💼

Client Wire Transfer

Yesterday, 14:15

+$9,200.00

☕

Artisan Roast Co

24 Sep, 09:12

-$6.40

Sarah Vance (Encrypted)

● End-to-end Signal protocol

Hey, did you review the Q4 financial audit files? Don't leave them open in public transit.

Yeah, keeping GhostScreen active right now.

Your emergency one-time auth code for the cold vault is: 894-112

Received. Destroying record now.

Security Keys (2FA)

Binance Exchange

user@etaegord.internal

739 204

GitHub Enterprise

piyushdas1624

582 911

ProtonMail Secure

vault@proton.me

410 827

GhostScreen

Status: ARMED & RUNNING

Instant Manual Mask

Tap to Toggle Overlay Now

👁️

Protected Apps

6 Active

Audit Events

42 Logged

Overlay Transparency

VaultBank Security PIN

Tap keys to test synchronized multi-ripple decoys

Overview · Android 13 Recents

🏦 VaultBank Mobile

CHECKING BALANCE

$28,490.50

•••• 9241 · VISA

Recent Wire: +$9,200.00

🛡️

GhostScreen Secured

Instant Camouflage Veil Active
System snapshot redacted

Tap card to resume app

Tap card or click button below to resume application.

CameraX Sentry 0.5 FPS

Scanning (1 face centered)

⚠️

GAZE GUARD PRIVACY VEIL

A secondary face was detected viewing your screen over your shoulder. Top 70% masked.

85%

🎛️ Privacy Overlay Controller

Test GhostScreen's real-time overlay geometry, responsive canvas shaders, and Material 3 Expressive tokens directly on the simulated device.

Viewport Privacy Geometry Mode

Mask Density / Opacity

85%

Privacy Texture & Shader

Material 3 Expressive Accent Palette

Rapid Preset Shortcuts

💡 Novel Privacy Innovations Lab (Target: Infinix X6815D)

Interactive simulation and edge-case failure analysis for upcoming Android 13 privacy features. Tested against locked invariants I1–I6.

CameraX & ML Kit Vision

1. Front-Camera Peeker Sentry (Gaze Guard)

Runs CameraX face detection at 0.5 FPS (1 frame every 2 seconds). If an over-the-shoulder peeker is detected looking toward the screen, GhostScreen triggers two tactile haptic pulses and drops an instant privacy veil over the top 70% of the display.

Secondary Face Area Ratio Threshold (ρ)

0.20

Head Yaw Angle Tolerance (|θ|)

25°

⚠️ Real-World Android Edge Cases & Failures

Android 12+ Green Privacy Indicator: Android enforces a persistent green dot in the status bar whenever the camera HAL is streaming. Users may find background camera polling alarming. (Notice the green dot glowing in the simulated status bar!).
Camera Hardware Contention: Android restricts camera sensors to single-process exclusivity. If the user launches Instagram, Snapchat, or native Camera, the system dispatches onDisconnected(). GhostScreen must yield gracefully via CameraManager.AvailabilityCallback.
Battery & Low Light: Even at 0.5 FPS, opening the sensor powers the hardware ISP (140–280 mA drain on MediaTek). In dark environments, high sensor noise causes false alarms unless gated by the ambient light sensor (<10 lux).

Touch Sandboxing & Physics

2. Decoy PIN Touch Scrambler

When entering a banking PIN or password, GhostScreen renders dummy touch ripple circles at randomized coordinates simultaneously, confounding shoulder-surfers and security cameras tracking finger position.

Decoy Ripple Multiplier (K Dummy Waves)

User Confidence Dot Mode

QUICK TEST PAD (OR TAP PHONE PIN PAD)

⚠️ Real-World Android Edge Cases & Failures

User Cognitive Confusion: Spawning 4 identical ripples causes the user to hesitate and lose muscle memory. Mitigation: GhostScreen renders a subtle micro-dot in the legitimate tap, visible only from the primary viewing angle.
Gboard / IME Sandboxing: Android software keyboards run in isolated InputMethodService windows. GhostScreen's FLAG_NOT_TOUCHABLE overlay (Invariant I1) cannot intercept raw touches on Gboard. Scrambling is strictly feasible on custom in-app PIN pads.
High-Speed Slow-Mo Attacks: If decoys lag by even 1 frame (>16.6 ms), 120 FPS smartphone cameras can isolate the real tap. All decoy ripples must be rendered synchronously in the exact same draw pass.

Spatial Frequency & Steganography

3. Anti-OCR Moiré Watermark Noise

Renders a micro-steganographic periodic grid over confidential text. Exploits optical aliasing between display subpixels and external camera sensors, causing severe moiré interference that degrades optical OCR accuracy.

Grating Pitch / Spatial Frequency (p)

6px

Grating Angle (θ)

45°

📸 SIMULATED SMARTPHONE CAMERA & OCR VIEWFINDER READABLE (98.9%)

                [CAM-1: 4K 60FPS]
                f/1.8 · ISO 100
              

Detected Text: "$28,490.50 (VaultBank Balance)"

Optical Aliasing: None · OCR Confidence High 98.9%

⚠️ Real-World Android Edge Cases & Failures

Computational Photography & AI De-Moiré: Modern smartphones (Pixel, iPhone, Galaxy) feature multi-frame HDR and deep-learning CNNs that actively remove static moiré. Mitigation: GhostScreen shifts the grating phase at 60 Hz, defeating single-frame de-moiré.
PenTile OLED Subpixel Matrix: The Infinix X6815D uses diamond PenTile OLED pixels. High-contrast static grids can produce green/magenta chromatic fringing. Mitigation: Use diagonal sinusoidal shading with fine modulation ($m \le 0.16$).
Screenshots vs. Photography: Moiré protects exclusively against external cameras photographing the physical screen. It has zero effect on software screenshots.

SurfaceFlinger & WindowManager

4. Task-Switcher Camouflage (Recents Shield)

Automatically stamps a solid, opaque privacy veil over the window the instant you swipe up to open the Android Recents / App Switcher, preventing banking numbers or private chats from being captured in system carousel snapshots.

⚠️ Real-World Android Edge Cases & Failures

Quickstep Gesture Transition Latency: In Android 10+, the system snapshot is taken at $t=0$ when the swipe gesture begins. If an app relies on AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED (arriving at $t=+80\sim150\text{ ms}$), the unmasked window has ALREADY been recorded in the system thumbnail!
Cross-App FLAG_SECURE Limitations: An accessibility service cannot inject FLAG_SECURE into third-party apps. GhostScreen must pre-emptively stamp its own top-level overlay before the thumbnail buffer is serialized.

🧠 Context-Aware Shielding & Sensor Triggers

Sensory capabilities that operate 100% offline, zero-telemetry, and preserve GhostScreen's locked invariants.

📐 3D Gyroscope Phone Tilt Angle DIRECT (0°)

0°

Slide to tilt phone in 3D. Shoulder-surfer blackout snaps to 100% OLED black when angle ≥ 40°.

💡 High-Impact Feature & UI Proposals

Detailed engineering analysis for features documented in docs/UPCOMING_FEATURES.md.

New Geometry

Dynamic Island / Pill Peek Mode 💊

A high-precision horizontal capsule that frames only the specific line of text or 2FA code you are inspecting. Uses curved pill caps (Path.addRoundRect), leaving zero peripheral visibility.

Preserves Invariants I1 & I6

Sensor Automation

Shoulder-Surfer Tilt Blackout 📐

Uses hardware SensorManager.SENSOR_ROTATION_VECTOR. If viewing angle deviates >40° from your primary vector, overlay automatically snaps to 100% OLED black.

Zero battery drain (<1% wake lock)

Accessibility AI

Node-Level Sensitive Field Auto-Mask ✨

Inspects AccessibilityNodeInfo tree for isPassword, regex matching ($, IBAN, OTP), and spawns micro-mask windows directly over the sensitive fields without obscuring the rest of the app.

Zero MediaProjection / Offline

Material 3 Expressive

Haptic Textures & Hardware Knots 📳

Synthesizes Android VibrationEffect.createPrebaked notches on 25%, 50%, 75% opacity crossings and edge resizing snaps, providing a physical, mechanical feel.

Supported via VibrationEffect

Optics Simulation

Micro-Louver Privacy Shader 🕶️

Replaces flat black masks with fine 45-degree micro-louvers rendered in hardware Canvas (BitmapShader). Simulates 3M privacy filter glass, obscuring wide viewing angles.

60 FPS on Infinix MediaTek

Instant Action

Lock Screen & Tile Quick Controls ⚡

Expand GhostScreenTileService with Android 14 lockscreen quick access buttons and dynamic status feedback, enabling 1-tap protection before unlocking your phone.

Android 13+ QS Tile standard