kirin co. ltd., in collaboration with white inc. developed world&rsquos first smartphonecontrolled led plastic bottle cap, called illumicap. the cap is installed with a bluetooth module and an led, which emits light downwards. this cap is designed to illuminate the whole plastic bottle, the plastic cap is provided with an dedicated mobile application that allows it to sense and react to music, thus illuminating various colors. illumicap comes with three main features that are controlled and communicated by smartphone application.