see this thread

http://petoftheday.com/talk/showthread.php?t=98681

then read this:

Have just walked Tobey for the first time using the Canny Collar. All I can say is that I wish I'd invented the darn thing! Its like walking a different dog!!

The ultimate test was meeting a couple with two carrier bags each. Normally he would have leapt at them barking but with his new collar he sat quietly while they stroked him and told him what a lovely doggy he is!!