Everyone uses smartphone nowadays. But research indicates that a smartphone can carry 10 times more bacteria than most toilet seats. This figure are far dirtier than most people think, and the more germs they collect, the more germs you touch. Our research has led us to create an effective self-sanitising screen protector designed to prevent transmission of harmful pathogens via your smartphone. Smartphone screen provides backlight which can be used on screen protector coated in special titanium dioxide (TiO2) by photocatalyzed activity to effectively and safely decompose pathogens.