@korttoma, thanks for the advice. Now I understand better. I guess I will need to come up with version 2 for my gateway. I did go through the articles shared by @sundberg84 but it is too much reading for me. I find it hard for me to understand them base on my level of knowledge. Your summary helps me a lot.

@masterkenobi said: There is also another thing concern me. What if my neighbor also into Mysensors? Will he be able to view all the data from my sensors? How do I secure the nodes? Take a look at https://forum.mysensors.org/topic/1021/security-introducing-signing-support-to-mysensors