Patent ID: 8808114

Claim:
A method for monitoring a tennis swing comprising: providing a cellular telephone having one or more accelerometers and a program that allows the cellular telephone to: monitor acceleration of the cellular telephone as the cellular telephone swings; collect acceleration information based on the monitored acceleration of the cellular telephone as the cellular telephone swings; analyze the collected acceleration information to determine one or more characteristics of a tennis swing based on the collected acceleration information; and output information regarding the one or more characteristics of the tennis swing on a display of the cellular telephone; coupling the cellular telephone to an arm or wrist of a user; and employing the cellular telephone coupled to the arm or wrist of the user to: monitor acceleration of the cellular telephone as the cellular telephone swings while the user swings a tennis racquet; collect acceleration information based on the monitored acceleration of the cellular telephone as the cellular telephone swings; analyze the collected acceleration information to determine one or more characteristics of the tennis swing based on the collected acceleration information; and output information regarding the one or more characteristics of the tennis swing on the display of the cellular telephone.