Privacy Policy

Last Updated: October 2026 • Effective Date: October 2026

At ScanVault, your privacy and cryptographic sovereignty are our core design principles. This Privacy Policy explains how our Android mobile application and website handle information.

1. Zero-Cloud & Local-First Architecture

ScanVault is built under a strict Zero-Knowledge guarantee:

No Remote Processing: All QR code and barcode decoding occurs 100% locally on your Android device CPU/NPU using Android CameraX and hardware ML acceleration.
No Telemetry or Tracking: We do not log, upload, track, or inspect the contents of your scanned barcodes, Wi-Fi credentials, contacts, or URLs.
No Intermediary Proxies: URLs scanned with the camera are never redirected through remote redirectors or analytics gateways.

2. Vault Data Storage & Encryption

When you choose to save scans to your History Vault:

Data is saved exclusively in your device's sandboxed internal storage.
Encrypted records utilize Android Keystore hardware-backed keys with AES-256-GCM encryption.
No account creation is required: no email, phone number, or password is sent to any remote server.

3. Camera & Hardware Permissions

ScanVault requests only permissions strictly necessary for application functionality:

Camera: Used in real-time solely to detect and decode QR codes and barcodes within the viewfinder. No video or frames are saved or transmitted without your explicit action.
Storage / Media (Optional): Required only when you explicitly tap "Save to Gallery" to export a generated QR code image.
Flashlight: Used to illuminate low-light scanning environments at your option.

4. Third-Party Services & Advertisements

We adhere to strict transparency standards. Any advertising partners (such as Google AdMob) operate within Google Play's standard SDK sandbox and comply with Google's Families and User Data policies. Our authorized digital ads verification record is published at /app-ads.txt in compliance with IAB standards.

5. Contact Us

If you have questions regarding this privacy policy or ScanVault's cryptographic implementation, contact us at:

Developer Support: support@nomidev.com
Website: ScanVault GitHub Repository