The file is no more available at Mega.
Code:
https://mega.nz/#!b19QWRCJ!rJef68-Wmli_fjuRMMj0gRNXIAOelbpM5Dde-B7gxew
Can you please re-upload or PM me the link to download from the original site?
Here are three apps, that use the OnGuard protection for their registration if you want to try your hands on them.
Karaokekanta (Versions 4 and current Versions 8)
SecureToken
Token2Plus
The Karaokekanta uses a lot of data to generate a Hardware Pin that serves as the basis for the registration code. The HardwarePin is also LocalTime dependant but once genereted some information is stored in a database so that the same HardwarePin can be generated.
That said deleting that database or that specific entry in the database will generate a different Hardware Pin.
Regards TemPoMat.