When it comes to security we need to be aware of compatibility and efficiency. Shutdown Timer's licensing algorithm is unique and custom made to ensure the same algorithm can not be replicated anywhere else, although it is secure and compatible, it does not include relevant server authentication to make sure you have bought the actual license, it relies on decrypting your license on the application level.
RSA is being actively researched and developed to provide a much cleaner way of managing license keys. With this authentication level we'll retrieve data from our web service to validate your license key to ensure you're the only license holder and anyone who tries to use your key will be flagged until you approve it.
We hope this change improves your experience with Shutdown Timer