A screen protector is an additional sheet of material that can be attached to a screen of a electronic device and protect it against physical damage. Screen protectors first entered the market after the rise of personal digital assistant (PDA) since PDAs were often operated via a stylus. The tip of the stylus could scratch the sensitive LCD screen surface, screen protectors provided sacrificial protection from this damage. Since then the ubiquity of mobile smartphones has seen the screen protector become widespread.
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