Patent ID: 8226494

Claim:
A wristop computing device for measuring the movement of a user's wrist while performing a series of swings of an object comprising: a housing attachable to a users wrist and measuring the bodily movement of the wrist within different defined areas of temporal space, the housing containing at least: a timing device, at least one sensor which is responsive to movement and arranged to generate a sensor output signal, a signal processing unit arranged to extract data on the course of each of the swings from the sensor output signal, said data including key time points of the swings, a computing unit arranged to calculate at least one statistical value representative of the user's repeatability of the series of swings using said extracted data from the signal processing unit; and a forecasted handicap for the user, which is directly comparable to the user's actual handicap; wherein the forecasted handicap is based in part on the at least one statistical value; and a display unit arranged to display at least one of the statistical value and forecasted handicap calculated by the computing unit.