A simple applet that launches a unity game instance to copy your unique system identifier.
Originally created as a way of decrypting Overcooked 2 save files using https://github.com/hadeutscher/OvercookedTool.
If your Overcooked 2 save file was saved without signing into GOG or Steam it uses this identifier as the encryption (SHA-1) password.
Download release and unpack. Then run _UnityDeviceUniqueIdentifierHarness.exe. The string of letters and numbers you see on screen is your devices unique ID. Click copy to have it copied to your clipboard. App can be closed after.
No feature extensions are planned for this tool but I will fix bugs if they arise.