Hi, is there a way to get the network adapter mac address with blueprints ?
No that part of the API is not exposed to blueprints. To get access to that you need to use c++.
Why donyou need that? O.o
I thought as much 
…
I’m just trying node locking options (yes I know it is not the best option, but for a really small project that my client wants to run only on a specific machine and no other would be useful) …
Well I guess it is C++ then …
Thanks for the prompt reply
Np interesting. Why you need this btw?
Well I am finishing up a small demo for a friend to showcase his work and he wants to make sure that the project will only run on his PC, in case someone else gets the executable in his hands etc.
Well, I always wanted to spend some time to make my BP nodes, I guess it is about time …