US Patent 10389865 Switching between watches or other accessories

Systems, methods and non-transitory computer readable media for allowing a user to switch between wearable accessories can scan for one or more on-body states from one or more paired accessories, determine based on a difference in on-body states that a switch between accessories has occurred, the switch being to a second accessory from a first accessory, and transmit synchronization data to the second accessory in response to determining that the second accessory has established a communication connection for data exchange with the companion device. Other embodiments are also described.