Pokemon Gold/Silver remakes let you train Pokemon by walking

Turns out that the same technology used in
Personal Trainer: Walking to train
you will also help you train Pokemans in
Pokémon Heart Gold and Soul Silver. According to
Andriasang, the
Pokémon Sunday TV show revealed a new pedometer device used in the game, called the "Poké Walker," that resembles a cross between a Pokeball and the
Pokémon Mini handheld. For some reason, Nintendo decided to make
another wireless pedometer peripheral for the DS rather than allowing people to use the existing one.
The device allows you to build one Pokémon's experience and personal affinity simply by walking. In addition, the Poké Walker generates "watts," which can be used to catch wild creatures and find tools inside the Poké Walker world to send back to the full game.
Check out the first screens of the remakes in our gallery, as you come to the terrifying realization that Nintendo didn't mention this game at all at E3.