Some high-quality ELM327 interfaces (like those from OBDLink or specific ScanMaster distributors) come with a "Lite" or "OEM" version of the software. In these cases, the registration key is usually printed on a card inside the box or included in a text file on the driver CD. The Risks of "Free" Keygens and Cracks
If you reinstalled Windows or changed your hard drive, your Install ID will change, and you may need to contact WGSoft for a license transfer. Conclusion
However, many users find themselves stuck at the "Registration Key" screen. Here is everything you need to know about the ScanMaster ELM327 registration key, why it matters, and how to get your software running legally and safely. What is ScanMaster-ELM?
The most reliable way to get a key is directly from WGSoft.de. When you buy a license: You install the software.