It may be we have a real game-changer, here. I've seen
hands-free flushing mechanisms for wall-mounted toilets before, but this touchless design does away with the questionably hygenic and usually ugly trip-lever for conventional tank commodes. Passing a hand through a sensor beam emanating from the tank lid triggers an electromagnetic cue to evacuate the bowl. While it's available with the Cimarron model, there is also a retrofit kit that can be installed on most single-flush toilets that have a flapper or canister-type flush.
kohler.com