I just managed to configure a second keyboard to map its keys to separate keycodes. Basically, I should be able to use it as a complete macro deck 😏 Thank god for Linux

That sounds really cool. I wish/hope there is a way to do this in windows. Also, I could see it being used as a tool to grief someone too!

@Demolishun Afaik, there isn't. Unless the keyboard manufacturer has some special HW/SW

May I recommend a arduino atmega 32u4 pro mini?
It's one of the few arduinos that can simulate a imput device.
Its actually my current project.
The very special think compared to a keyboard Is that you can insert a full text with a key press... Let's say all the tags for a html file, the basics a program code, different signatures for email... Also key combinations...
Or...
Can program it to hack, place it in a USB port and it will run your script, let's say, send a email with all the data you can steal, or open two girls one cup in full screen

@Demolishun maybe AutoHotKey is what you're searching for

(No personal experience, I just heard it in Tom Scott's "The Art of the Bodge: How I made the Emoji Keyboard" https://youtu.be/lIFE7h3m40U )

@Jedidja rewatched it: for distinguishing 2 keyboards you might need to use luamacros

@GyroGearloose Yeah, I think I might have a bag of those laying around somewhere (sorry btw, missed your comment 😅)

@Jedidja I don't think AHK can detect different keyboards though. Does it even exist for Linux?