just to expand on my previous comment, as I'm now sitting at a keyboard rather than on my phone. yes, I can use QMK or via to configure what scan codes the keyboard sends to the computer, but how those scan codes are interpreted by the OS is at the mercy of the keymap. so for the UK, I configure a button as 3 and the OS decides whether shift-3 is £ or #. I'd like an option for both Mac and windows to allow me to have exactly what character or function every key does configurable from the keyboard alone, and not rely on the keymap to interpret what it thinks I mean.

I know this is a hold-over from back in the days but it feels like something we could fix.

Also, I'd want this key mode to be baked into the OS so that I can still use it on locked down work machines...

PS. incidentally I had to get # from the Mac symbol tool as I have no idea where it is mapped... or even if it is mapped... oh.. it's alt-3 apparently... again, that's a keymap thing, not what I've told the keyboard to generate.