i-Change / Screen Protector

This product is designed to prevent people from overusing the cell phone. As we know, the temperature of cell phones rises when continuously using it for a long time. The screen protector detects the temperature of the cell phone screen and the color of the screen protector gradually goes green as the temperature is rising to remind the user that it is time for a break. And ultimately the color would go deeper and make the icons invisible, which forces the user to go on a break.