We discussed about Nintendo entering the pedometer game a few days back and had much speculation regarding its usage mystery. But the mystery no longer is a mystery anymore as the explanation of its existence has been revealed.

According to Joystiq this pedometer device (with game Life Rhythm Counter) will be tied to a fitness game for the Nintendo DS (expected to be newly launched DSi).

The hardware will sell for ¥1800 (about $17), and the game will be the first title to allow Wii Miis to be transferred to the handheld.