Personally, I'd like to see some sort of GPS collar system. Something where I can monitor the position of my cat at all times overlayed on a map or sattelite image. Then when my cat has been out for too long I could find her and go get her. As well, I'd be able to see the areas she actually travels to so I can better assess the danger. This is already available for wildlife so it shouldn't be long before one is available for pets.......and maybe even children 