Privacy Policy

1. Data Controller

The responsible party (data controller) within the meaning of the General Data Protection Regulation (GDPR) and other national data protection laws is:

Stefan Dützer
Dietrich-Bonhoeffer-Str. 7
49377 Vechta
Germany
Email: otp-kommunikator@duetzer.de

2. Principle of Local Data Processing

The "OTP-Communicator" project is designed for maximum data minimization. There is no unnecessary collection of personal data on this website.

• No Tracking: No analytics tools (such as Google Analytics) or advertising trackers are used.
• No Cookies: This website does not set any cookies.
• No External Resources: All fonts, images, and scripts are loaded locally from our own server. No data is transmitted to third-party providers (such as Google Fonts or external CDNs).

3. Provision of the Website and Creation of Log Files

Every time you visit this website, the system (the web hosting provider) automatically collects data and information from the computer system of the calling device. This technical data collection is absolutely necessary for the operation of any website.

The following data is collected:

• Information about the browser type and version used
• The user's operating system
• The user's IP address
• Date and time of access

This data is stored in the system's log files. This data is not stored together with other personal data of the user. The legal basis for the temporary storage of data and log files is Art. 6 (1) lit. f GDPR. The collection of data for the provision of the website is absolutely necessary for its operation. Consequently, there is no possibility of objection on the part of the user.

4. Web Applications (PWAs) and Local Storage

The web applications offered on this domain (e.g. OTP-Communicator, Promille Calculator, etc.) are designed as offline-first applications (Progressive Web Apps). To ensure functionality and offline use, certain data is processed:

• Local Storage: All user-specific inputs (such as created profiles, scores, or keys) are stored exclusively locally on your device. No data is transmitted to the web server or third parties.
• Service Worker: For offline capability and load time optimization, necessary program files (HTML, CSS, JavaScript, images) are stored in the browser's local cache.

You have full control: All locally stored data can be completely removed at any time by clearing the browser data (cache and site data) for this domain or by removing device-specific profiles directly within the respective app.