Evaluated against two other dedicated pedometers, the Pokéwalker - an add-on device for the HeartGold and SoulSilver Pokémon titles - is the most accurate device for counting steps, according to researchers at Iowa State University.

The results were presented recently at an experimental biology conference by Lorraine Lanningham-Foster, an Iowa State professor who has been studying the Pokéwalker's usefulness since its release. This study, which found the Pokéwalker most accurate counting steps taken