You can use our packages under their existing open-source licenses.

For organizations that need guaranteed support and/or a predictable maintenance path for specific versions and environments, we offer paid Commercial Support for a defined scope and timeframe.

What you can buy​

1) Commercial Support (priority handling)​

We provide priority handling for issues/questions that fall within the agreed scope. The exact scope is defined in the agreement issued to you.

2) Ongoing support for specific environments/versions​

We can contract to keep specific versions of our packages working and supported in your environment for a defined timeframe.

This can include support for:

• a specific runtime/version (e.g., .NET),
• a specific Node.js version,
• a specific browser version or browser family,
• a specific operating system/version,
• and/or any combination.

Examples include:

• keeping a version supported while you upgrade the rest of your dependency stack,
• providing fixes/workarounds needed until you can complete an upgrade,
• backporting or compatibility updates for a defined window.

3) Faster-than-free updates (priority delivery)​

We can prioritize updating our library and/or related dependency compatibility faster than our free community release cadence—when timing matters.

Examples include:

• upgrading to newer dependency versions to support a required platform release,
• shipping urgent compatibility fixes ahead of the next community release,
• delivering accelerated fixes for a critical issue affecting your target environment.

Why we drop older versions (and why this offer exists)​

Supporting older environments increases build time and engineering complexity: larger test/build matrices, more packaging complexity, more failure modes during maintenance, and more risk as the ecosystem evolves.

In practice, customers may fall out of step with our release cadence—or with each other’s cadences—because:

• Dependency upgrade lag: your other libraries/frameworks upgrade on a slower schedule.
• Enterprise change control: internal approvals can delay upgrades.
• Platform freezes: production environments may be frozen for a release window.
• Browser/OS update timing: you may need to support older OS/browser versions due to customer devices or procurement realities.
• Long-lived apps: internal products can require extended stability compared to upstream “latest” releases.
• Required urgency: you may need a dependency/platform update before the next free community release window.

Because of this, we may remove older environments/versions from community releases when maintenance cost outweighs community benefit.

This paid option exists to support organizations that still need their software “to just keep running”—without forcing the community release pipeline to carry long-term complexity.

Important note about “keep it running”​

This is not a promise that every historical version/environment will be maintained forever for everyone.

Instead:

• community releases follow a sustainable support cadence,
• contracted customers can buy continued compatibility/support for the version(s)/environment(s) and timeframe they need,
• and/or buy accelerated delivery for specific updates within the agreed scope.

What happens next​

Email us at codeuctivity@gmail.com with the scope you need. We’ll reply with the options available and propose an agreement.

In your message, include:

1. package name(s) (NuGet and/or npm)
2. version(s)/environment(s) you need (examples: Node, browser, OS, runtime)
3. your goal (CI, internal apps, distribution, etc.)
4. timeframe/end date
5. whether you need faster updates or compatibility/backports for older versions

Give it a try at BelegScan.at.

What is BelegScan?​

BelegScan.at reads Austrian cash register QR codes (RKSV - Registrierkassensicherheitsverordnung) and displays receipt data clearly. The web app works for free and runs directly in your browser – no app installation required.

Key Features​

• Signature Validation: Automatically verifies the cryptographic signature of RKSV QR codes to ensure receipt authenticity and integrity
• No Installation Required: Works as a Progressive Web App directly in your browser
• Cross-Platform: Works on iPhone, Android, and desktop browsers
• Free to Use: Completely free with no hidden costs
• Offline Capable: Once loaded, the PWA works even without an internet connection
• Scan Receipts: Easily scan Kassabons, Kassenzettel, and Quittungen from Austrian cash registers
• Clear Display: View scanned receipt data in an organized, easy-to-read format

Signature Validation​

BelegScan validates the cryptographic signatures embedded in Austrian cash register QR codes according to RKSV (Registrierkassensicherheitsverordnung) requirements. This validation ensures:

• Authenticity: Confirms the receipt originates from a registered cash register
• Integrity: Verifies the receipt data hasn't been tampered with
• Compliance: Helps businesses and consumers verify RKSV compliance
• Trust: Provides instant verification that receipts are genuine and unmodified

Why PWA?​

By relaunching as a Progressive Web App, BelegScan.at offers several advantages:

• Instant Access: No need to download from app stores
• Automatic Updates: Always get the latest version
• Less Storage: Uses minimal device storage compared to native apps
• Universal Compatibility: Works across all modern devices and browsers

Get Started​

Visit BelegScan.at to start scanning your Austrian cash register receipts today!

For questions or feedback, contact us at Codeuctivity@gmail.com.

Update 2025 - rereleased:

Google Play Store is a great platform to distribute Android apps. However, the recurring effort to keep the changing regulatory requirement up to date is not worth it for me. I have decided to let my dev profile fade away and focus on other things.

App store entries today that will be removed​

BonReader Pro​

https://play.google.com/store/apps/details?id=com.codeuctivity.bonreaderPro3

https://youtu.be/Igtaho_6Ies

The Android app "BonReader" has been specially developed to read information from QR codes from Austrian cash registers. The app allows users to scan QR codes on printed invoices and extract relevant information.

How the app works:

QR Code Scanning: The app uses the Android device's camera to capture the QR code on the printed invoice. The user can simply place the QR code in the camera's field of view and the app will automatically recognize the code.

Reading information: As soon as the QR code has been recorded, the app reads the information it contains. This includes data such as the invoice number, the invoice date and the total amount.

Export and archiving: The app offers the option of exporting the recorded data in XLSX format. Users can save their billing information in an Excel file and use it for accounting or other purposes.

The described app allows users to easily scan QR codes on Austrian cash register bills and extracts the relevant information. This makes the processing of invoice data more efficient and convenient.

BonReader​

https://play.google.com/store/apps/details?id=com.codeuctivity.bonreader

https://youtu.be/Igtaho_6Ies

Its quite the same like 'BonReader Pro' but with commecial.

LockPDFy​

https://play.google.com/store/apps/details?id=com.codeuctivity.LockPDFy

LockPDFy is a user-friendly, open-source tool for Windows that swiftly encrypts and decrypts PDF files at no cost.

You can still download the version from the windows store.