A pet owner came up with this remarkable device, which not only monitors your pet while you are gone, but also allows you to interact with him via an app. Apparently, other people can also interact with the dogs, when they have the app, and there is a pointer that the dog can watch and "chase" across the screen. They even have their own kind of Doggy Facebook, where you can share your pet's antic with other pet owners.
While this is still being developed and refined, it looks like it will also be a wonderful tool for pet rescues, and humane societies. The plan is to set the Petcube up in dog shelters, and then people can interact with the pets online, using the app.