Apple might consider updating the Touch Bar on MacBook Pro models so that it can detect movement in the air with the user's fingers. In other words, you won't need to touch the bar to use it. In any case, according to a patent (filed in the US Patent and Trademark Office, as discovered by Patently Apple), the idea is to implement a sensing strip on the Touch Bar, possibly incorporating elements of optical sensors. , than capable of detecting fingers floating above. This will allow the user to make gestures in the air as mentioned, and different functions could be triggered depending on where the fingers are and where they are moving. The sensor strip may be integrated into the Touch Bar, or there may be two strips, one on the bar and one on the bottom of the laptop's screen (probably to help with accuracy). Another possible illustrated design is to have the sensor strip on a folded edge over the laptop's hinge (just below the screen), the edge potentially sloping.