The use of gestures on a user device to interact with and obtain functionality from remote communication hub devices is disclosed. A user device includes an accelerometer or other motion detection device and a wireless communications capability. The device is small enough to be placed conveniently about the person and communicates with a communication hub device to perform context-dependent actions. A user makes a gestural command to the device. The device interprets the gesture and undertakes activity. The gestural sensing device may be a motion switch, a multi-axis accelerometer, a video camera, a variable capacitance device, a magnetic field sensor, an electrical field sensor etc. When combined with business logic running on a remote computer system, the device can be used to implement a range of applications and services.