Abstract: A grip interface is used to provide information about a user to a range of connected devices and applications based on the users' interactions with the grip. By embedding into the grip an array of sensors for motion, health, environmental and other data using embedded microcontroller network technology, and focusing on the grip as the interface between the physical and virtual worlds, applications and services to existing grip-based devices are enabled. Applications for the grip include as sports, fitness equipment, health monitoring, activity tracking, coaching, physical therapy, mobility aide and virtual entertainment, among others.