Magnetic Privacy Screen for MacBook Pro 16 are designed to prevent visual hacking a growing form of identity theft in which private on-screen information is either viewed or photographed over the shoulder. This magnetic privacy applying optical principles of polarized light, to anti peeping and protect privacy. This privacy screen protector features resistant material coating, 4-5H hardness, scratch-proof and fingerprint-proof. Protect your sensitive information with a Privacy Screen Protector to prevent harmful exposure you receive from long-term exposure to screens.