I agree but this solution isn’t the answer. What’s needed is a virtual keyboard setup that will still allow for querty simulation. When I first saw the title of this article, that’s what I thought it was providing, with sensors to respond to finger angles, like that produced on a querty keyboard. Disappointed to find that wasn’t the case.
I don't think tech is there yet, but yes I agree virtual/projector based keyboard is probably a future method here. This isn't the same thing at all, so a direct comparison isn't necessary imo. Virtual keyboard would likely replace applications of standard keyboard we use, such as desk, ATM, etc.