Main Function of Privacy Filter: - Privacy Protection: Keeps one?€?s personal or confidential information safe from prying eyes - Reversible Surface: the privacy filter has 2 side, one is glossy and the other is matte - Eye Protection: the matte side have Anti-glare property, which makes less eye strain - Anti Blue Light, Anti UV: the filter can reduce blue light, and UV ray, which help protect eyes - Screen Protection: Protects display from dirt, debris and scratches - 100% inspection for quality assurance Working Theory Of Privacy Filter Our Privacy Filter used advanced micro-louver technology, which can effectively narrow the viewing angle. People on the front can see the screen clearly, while people on the side angle can only see a dark unclear screen. It help protect the confidential and sensitive information on the screen safe.