Comment by burnt-resistor

Had a coworker in the 90's who had the DataHand Pro II and used it with Dvorak layout. Apparently, it also had integrated mouse emulation. I recall they had platforms installed on their office chair to allow for less strain than tabletop and lap use.

I used the Microsoft Natural for a while because I was poor and couldn't afford $600 USD for a DH. If they priced it at $150-250 then, they probably would still be in business today.