Okay, so it is really a big advantage if NEM is the only public blockchain implementing Mijin. Now I got why everyone is so exciting about the Catapult release and me as well now

Thanks for helping me to get the question out of the world. This is really why I pretty love the NEM community. Always friendly and helpful.
Catapult is a brand new enterprise class blockchain with not only improved performance but an increased cutting edge feature set that is designed for easy development to lower the entry barrier for rapid deployment and adoption. NEM will be the only public blockchain using this advanced architecture and will be the easiest one to integrate with the private version Mijin.
Great, thanks for sharing. NEM Authenticator seems exactly what I was looking for. I did not fully understand the technical aspect after reading but I will discuss this with my friend. He does probably do. Maybe I coming back later to have some question about it.