Privacy policy for the GK-UTM program
This English version is for information only. Only the German version is legally binding.
Coordinate conversion from Gauß-Krüger to UTM. As at 2 November 2026.
The most important points first: All calculations run exclusively on your computer. Your drawings (DWG/DXF), coordinates and project data never leave your PC. There is no telemetry, no usage statistics and no advertising. The program's only internet connections serve licence checks and update checks with the licence server of Geier-IT (keygen.gdyn.de).
1. Controller
The controller within the meaning of the General Data Protection Regulation (GDPR) is:
Geier-IT – Anton Geier, Untere Bergstraße 2, 55487 Sohren, Deutschland. Email: info@geier-it.eu. Telephone: +49 152 04202892.
You will find further information in the legal notice. There is no obligation to designate a data protection officer under Art. 37 GDPR.
2. Which data the program processes
2.1 Locally on your computer (no transmission)
- The drawings you open and the coordinates you enter are processed and stored exclusively locally.
- Program settings (e.g. selected theme, target system, output folder) are located in the Windows user profile under %LOCALAPPDATA%\GK-UTM.
- The proof of activation is likewise stored there, encrypted and bound to the machine (Windows DPAPI).
2.2 Transmission to the licence server of Geier-IT
The program connects to https://keygen.gdyn.de (server location: Germany) only in the following three cases:
| Process | Data transmitted | Purpose |
|---|---|---|
| One-time activation | Licence key, company name entered by you, device ID (SHA-256 check value of the Windows installation ID – not the ID itself), program version | Unlocking the licence and binding it to your computer |
| Validity check at every program start | Licence key, device ID, program version | Check whether the licence is still valid (not expired, blocked or reset). If the server cannot be reached, the program continues to work normally offline. |
| Update check at every program start | Installed program version | Notification of a newer version; a download takes place only after your express confirmation. |
With each of these connections, the server receives your IP address for technical reasons. It is not stored with the licence record; in the server logs it is retained for a short time for misuse and error analysis and is deleted automatically.
2.3 What is not processed
- no contents of your drawings or coordinates
- no names of files or projects
- no usage statistics, no usage behaviour, no crash reports
- no disclosure to third parties and no transfer to third countries. The licence server runs in Germany on our own servers.
3. Legal bases
- Art. 6(1)(b) GDPR (performance of a contract): Activation and validity checks are necessary for providing the licensed software.
- Art. 6(1)(f) GDPR (legitimate interest): Protection of the licence against abusive multiple use and the provision of security and feature updates.
4. Storage period
- Licence data (key, company name, device ID, activation date) is stored for the duration of the licence relationship and beyond that within the scope of statutory retention obligations.
- Server connection logs are deleted automatically after a short time.
- You can delete the data stored locally on your computer yourself at any time by removing the folder %LOCALAPPDATA%\GK-UTM; on uninstallation, the activation and settings are deliberately retained so that a reinstallation is possible without renewed activation.
5. Your rights
Under the GDPR, you have the following rights:
- Access to the data stored about you (Art. 15),
- rectification of inaccurate data (Art. 16),
- erasure (Art. 17) and restriction of processing (Art. 18),
- data portability (Art. 20),
- objection to processing based on Art. 6(1)(f) (Art. 21),
- lodging a complaint with a data protection supervisory authority (Art. 77), e.g. with the State Commissioner for Data Protection of your federal state.
To do so, please contact us using the contact details stated above under section 1.
6. Obligation to provide data
Providing the licence key and company name on activation is required for using the program; without them, the licence cannot be unlocked. All other functions of the program work without any data transmission.
7. Changes to this policy
This privacy policy is amended when the program or the legal position changes. The current version in each case can be found on this page.