Cards manager - Smart Loyalty Card Wallet

Why use Cards manager?

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Smart Auto-Cropping

Powered by Google ML Kit on-device AI. Automatically detects card borders, crops backgrounds, and straightens perspective for a perfect scan.

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Double-Sided Scanning

Easily scan both the front branding and the back barcode in a single flow. Perfect for cards with barcodes printed on the back.

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Digital Barcode View

Automatically decodes barcode value and reconstructs a mathematically perfect high-contrast vector barcode. No more reflection issues at checkouts!

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Max Brightness Scan

Tap on the digital barcode to expand it full screen and automatically set your phone's screen brightness to 100% so laser scanners read it instantly.

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100% Offline & Private

All scanned cards and barcodes are stored locally in your app's secure private memory. Your data never leaves your device—no internet required!

🔌

Zero Permissions Model

Runs securely via Google Play Services out-of-process, meaning the app doesn't even request direct Camera permission on your device.

Privacy Policy

Last updated: May 26, 2026

Sander Vogelzang ("we", "our", or "us") operates the Cards manager mobile application (the "App") for Android devices. We are committed to protecting your privacy. This Privacy Policy explains how we handle information in relation to your use of the App.

1. Information Collection and Use

Cards manager is a 100% offline utility app.

No Personal Data Collection: We do not collect, store, or transmit any personal data, contact details, location information, or device identifiers.
Local Storage Only: All data you add to the App, including store names, scanned card photos, and barcode numbers, is saved locally and privately on your device's secure internal storage.
No Server Communication: The App does not connect to the internet, communicate with external servers, or use any cloud databases. Your data never leaves your physical device.

2. Device Camera and Files

Camera Access: The App utilizes Google Play Services Document Scanner to capture card images. The App itself does not require or request direct camera permission. The images are captured and processed on-device.
File Access: The App stores scanned card images inside the App's secure private internal storage directory. These files are not accessible by other applications on your device.

3. Third-Party Services

The App uses Google Play Services APIs (specifically Google ML Kit for Document Scanning, Barcode Scanning, and Text Recognition). These services process images and scan barcodes on-device. No image or scan data is sent to Google's servers.

4. Children's Privacy

Our App does not collect any personal information from anyone, including children under the age of 13. The App is safe for users of all ages.

5. Changes to This Privacy Policy

We may update our Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy text on this page. You are advised to review this Privacy Policy periodically for any changes.

6. Contact Us

If you have any questions or suggestions about this Privacy Policy, please contact us at: sander.vogelzang@gmail.com