Abstract: A yo-yo has at least one sensor configured to measure a parameter related to movement of the yo-yo, a transmitter configured to transmit the measured parameter to the computing device. A server is configured to determine a trick performed with the yo-yo based on the measured parameter, and to communicate the determination to one or more computing devices of different players.

Abstract: A yo-yo has at least one sensor configured to measure a parameter related to movement of the yo-yo, a transmitter configured to transmit the measured parameter to the computing device. A server is configured to determine a trick performed with the yo-yo based on the measured parameter, and to communicate the determination to one or more computing devices of different players.

Abstract: A gun case for transporting and storing a gun with forward and rear portions. The gun case includes a forward housing with rigid side walls that form a cavity configured to receive the forward portion of the gun. The gun case also includes a rear housing with rigid side walls that form a cavity configured to receive the rear portion of the gun. The rear housing is pivotally coupled to the forward housing for movement between an open position providing access to the cavities and a closed position capable of securing the gun within the gun case.