On Mon, 13 Apr 2020, Peter Sjöberg wrote:
I have a security issue, we have some QR scanners that can scan lots of different 2D/3D codes. They connect on usb and show up as any ordinary HID device. This means it's basically a keyboard connected
I don't know your the system configuration but you can have one more than HID device; they could be opened by different programs.
I have a foot pedal I wanted to use for transcription which sends simple "1 2 3" text. I explored hooking it up to mplayer through a filter/translater so I could start/stop/rewind audio.