Iím looking for an app that will disable all electric devices (smart phones, cell phones, boom boxes. etc.) within one mile. This will ensure a quiet noise free crag where everyone is paying attention to climbing and not some Tweet, FaceBook post, email, or iTune. It will probably also provide the added benefit of less crowded crags as people under 25 will not be able to cope with no technology. They may even wonder what that tweeting noise is coming from the trees.
Anyone who can create such an app please let me know. I will get some venture capitalists together to invest.