As a pipe organist using PM live on a touch-screen, I would find it very useful to have another means of page turning other than touching the screen or using the foot pedal (which is impossible to place under a church organ on an ‘ad hoc’ basis).
Can a manufacturer please design a ‘wrist watch’ type device (Wireless or Bluetooth) which could be worn on the right wrist (or left if preferred). It would then be fairly simple to tap its screen with the left (or right) hand. So, even when playing a very fast toccata it would be possible to quickly turn to the next page ‘risk free’. It would not need to have an option to turn back a page, as if there were repeats within the score, the extra pages could be scanned in and added so that the musician only moved through the pages with no need to turn back. If it was necessary to turn back, touching the screen as now, would suffice.