This product is uniquely appealing to me because as a kid, I actually used to type almost completely with one hand at 40 wpm using my right hand solely for the backspace, enter, shift, and space keys. The only reason I stopped and learned how to use both hands to type was that my left hand started getting arthritis-like symptoms as a 10th grader.

Unfortunately, my hand hurts just looking at the example in the promotional video I found. I don't see how you could hold your hand up at that angle like that and not end up straining it. However, I'd love to be wrong.