RemoFinger's KickStarter campaign has it all!
A barely practical product, for an ultra-niche market, with presenters who can't English. The RemoFinger provides 4 "touch pointers" for touch screens, that are triggered wirelessly by a dedicated stompbox. In fairness, their funding goal is modest and their asking price for this is nice at just $80. They optimistically hope to ship by November.
This is one of those products that first seems insane, but after considering it I can see this being useful!