Not like we haven't seen a similar idea
passed around before, but James Auger and Jimmy Loizeau have apparently taken things one step further with their LED Dog Tail Communicator. As the title implies, the device would simply be affixed to your favorite canine's tail, after which it could broadcast actual words based on the speed of the tail wag. There's no telling just how many phrases the thing could spell out -- and honestly, we have no idea how accurate
the statements would actually be -- but this may be just the thing to keep Rover quiet while still letting him get his point across.