A system and method for interactive play that includes an object having a visible characteristic such as a color pattern that is recognizable in an image. The second protector is fitted with the first protector. In the first and second coating process steps, the peripheral velocity of the outermost end of stirring members, the coating process time, the product temperature at the end of the coating process, and the glass-transition temperature of the resin component satisfy specific relationships. Further, the fourth lens unit G4 includes, in order from object side to image side, a lens element L8 having positive optical power, a lens element L9 having positive optical power, and a lens element L10 having negative optical power. In preferred form, at least the base of the coverguide is transparent so that an inspector can readily view the electrical conductors without having to remove the cover. The electrode layer is positioned between the top layer and the base layer and coupled to the fluid channel.