Any specifics on the kind of typing they need? If it’s human text (as opposed to code), one handed swipe style typing on a smartphone can get really fluid, and

Any specifics on the kind of typing they need? If it’s human text (as opposed to code), one handed swipe style typing on a smartphone can get really fluid, and it’s relatively easy to get for someone who is a touch typer. I’d check on ways to use that as computer input if needed.