Abstract: A system for automatically gathering information on a performance of an action involving an object being hit or struck, the system comprising at least one object contact sensor for detecting a contact with the object. Preferably one or more of the at least one object contact sensors comprises a shock and/or vibration sensor such as an accelerometer, and/or one or more of the at least one object contact sensors comprises a sound sensor; and the system is configured to at least partially detect shock and/or vibrations caused by contact with the object using the one or more shock and/or vibration sensors and/or at least partially detect sound generated by contact with the object using the one or more sound sensors to thereby detect contact with the object.