Abstract: Power is managed in an electronic tag attached to a golf club. A first wake event from a light sensor in the electronic tag is received. The first wake event is based on detection of light by the light sensor. A processor located inside of the electronic tag is awakened from a first low-power state to an active state in response to the first wake event. A first sensor in the electronic tag is enabled and first information is obtained by the processor from the first sensor in the electronic tag. A first orientation of the golf club is calculated based on the first information from the first sensor, and it is determined that the first orientation of the golf club is outside of a first predetermined range. In response, a second wake event based on detection of motion by the first sensor enabled. The processor is then put into the first low-power state.

Abstract: A golf course management tool receives location information from devices associated with golfers as they play golf. The location information includes ball-striking locations and periodically determined locations of the golfer. The location information is stored in a database and is linked to the appropriate golf course. A user is presented with a graphical user interface which presents the location information overlaid on an overhead image of the golf course. The location information is presented in various ways under the control of the user. Statistics are also calculated for the holes and rounds played and presented to the user. The location information can also be filtered in a variety of ways under control of the user to alter the graphical presentation and statistical calculations.