Abstract: Methods, systems and apparatus for golf swing analysis are disclosed. One golf swing analysis system includes a motion sensing device attached to a golf club, the motion sensing device comprising a controller and one or more motion sensors. The golf swing analysis system further includes a remote processor, wherein a wireless link electronically connects the remote processor and the controller of the motion sensing device. Further, at least one of the controller and the remote processor are operative to access sensor data generated based on sensed signals of the one or more motion sensors, and perform pattern recognition analysis on the sensor data, comprising identifying and analyzing at least a portion of a golf swing based on the sensed data.

Abstract: Methods, systems and apparatus for controllably activating a motion apparatus are disclosed. One apparatus includes a mechanical switch, the mechanical switch including a switch contact, wherein the switch contact is open when the mechanical switch is at rest, and at least momentarily closed when the mechanical switch is subject to at least a threshold level of acceleration. The apparatus further includes a controller, wherein the controller is operative to activate the apparatus upon detecting that the mechanical switch is at least momentarily closed. One method of controllably activating a motion apparatus includes at least momentarily closing a mechanical switch of the motion apparatus when subjecting the motion apparatus to at least a threshold level of acceleration, sensing that the mechanical switch was at least momentarily closed, and activating, by a controller, the motion sensing upon detecting that the mechanical switch is at least momentarily closed.