A portable electronic device that promotes user awareness of approaching a usage limit is provided, comprising a processor, a memory, and an application. The present invention can operate in a chamber having a pressurized environment, without adversely influencing or causing pressure changes. This hinged golf training club 20 will give unmistakable positive feedback to the user both as how to use the hands, wrists and forearms in the golf swing to effect what has been popularly called the release of the club through the ball, and also gives the user exact, unmistakable three dimensional feedback as to where the shaft is to be thruout the swing in order to effect the correct swing. The first and second dummy gates are simultaneously removed to form respective first and second openings.