Each console has its own disc, and they are not interchangeable.
The Game Disc has the software to run the game. When they come in the package, the tags themselves are not specific to any item.
There are three zones on the Toy Pad, a round zone at the back and two L-shaped zones in front. It plugs into the console via USB, and recognizes when a Toy Tag is placed on it. The Toy Pad is a console accessory that is the core piece of the Toys-To-Life aspect of the game.