I am always amazed when old things we used to do show up again, and again, with minor variation. We used to be able to make (I think you could buy it too) PS/2

I am always amazed when old things we used to do show up again, and again, with minor variation. We used to be able to make (I think you could buy it too) PS/2 keyboards or dongles/warts/mitm devices that did this. The attacker interface was a bit more cumbersome, but ultimately did the same thing.