[ampaterry]

I have not had the pleasure of examining one of these, but it certainly sounds like an interesting idea -

As part of my job, I did a lot of patent searches to avoid infringement issues. Some of the things that I turned up were absolutely WILD.

I remember an early patent on the electronic dog collar. It was listed as a device for control of dogs or 'unruly children'. That particular one was French, I believe.