Way to identify device over multiple M4L runs?

quatro's icon

Track and device ids are not permanent, aren't they? Is there a good way to identify devices then?
I need to connect several devices on different tracks for interaction and I want them to stay connected when I reopen Live set. I can use hidden param to identify M4L device, but that's only for M4L

quatro's icon

I figured out. It seems to me that storing the path is the way