Pedometer (Activity Based)

In 1965 a pedometer called a manpo-kei (meaning "10,000 steps meter" was marketed in Japan by Y. Hatano. Y. Hatano promoted "manpo-kei pedometers" from 1985, after his research was accepted as proving that 10,000 Steps A Day was the proper balance of caloric intake and activity-based caloric expenditure to maintain a healthy body. Jiro Kato, who founded Yamasa Tokei Keiki Co., Ltd. in Tokyo, manufactured pedometers recognized to be accurate, and named them "manpo-meter" (later "manpo-kei", registered as a trademark of the company), claimed to be the world's first device to measure number of steps of walking.