An implant for insertion or implantation within a body includes an electrical circuit for performing one or more commands when the implant is activated, an energy storage device, and a switch coupled to the electrical circuit and the energy storage device. The reservoir includes a bottom wall accessible at the insertion-and-removal opening. The method is highly effective for detecting andor preventing genotyping errors due to total or partial non-amplifications occurring during amplification procedures such as the Polymerase Chain Reaction. The first fragile portion is broken by a smaller impact load at the time of collision with the side where the power unit is installed than at the time of collision with the side where the power unit is not installed. The light-emitting fibers are activated in such a manner as to display an image indicating the entranceexiting of a player andor game object infrom a hot zone area thereby ensuring the game is fair and accurate and enhancing the experience of the game.