Apple has been rumored for some time to be working on an "iWatch" featuring biometric sensors and integration with other iOS devices, and a recently published patent application (via AppleInsider) addressing pedometer functions is being presented as evidence that the company is indeed working on a wrist-worn fitness device. In some implementations, optimizations for detecting steps when a pedometer is worn at a user's wrist are described. In some implementations, a threshold crossing step detection method can be enhanced for wrist locations by counting the number of positive peaks between compari
