I had doubts whether the QRc will be possible to scan, but it seems to be working 
My own design... Yes, I know, not very original but I think it's something good to start with
What do you think?
My own design... Yes, I know, not very original but I think it's something good to start with
What do you think?
It seems like an original idea, at least) I like it. Good luck to you!