Originally Posted by ranjit
However, I am sure even the development of proprioception can be accelerated using various strategies. Of the top of my head, you can visualise playing the piano away from the instrument, play blind, place a piece of cardboard on top of your fingers, play on the top of the keys without depressing them, etc. An experienced pianist may have a better idea of what strategies work better.
I don't think the strategies you listed work well or are used with any frequency by experienced pianists. The ability to play without having to look at the keyboard all the time develops gradually in most pianists over the years. It's only necessary when playing from the score. The really important skill to learn is how to glance at the keyboard and then be able to find one's place back in the score. Virtually all good pianists look quickly at the keyboard sometimes when playing with the score.