Instant Snap-on Magnetic Attachment: Simply place the privacy screen along the top of your MacBook and let the magnets attach securely. No need for complicated alignment, tape, or permanent adhesives. Easily remove and reattach as needed. Note that when the privacy screen is attached, the laptop will not close completely, but sleep mode remains functional. LEAVE VISUAL HACKERS IN THE DARK: Help protect personal and business information from onlookers. The filter darkens the screen when viewed from the sides while maintaining clear frontal visibility. Enhance security with reliable screen protection. WE'VE GOT YOUR SCREEN COVERED: This 19-inch diagonal desktop filter is one of 26 models designed to fit thousands of displays. Made with high-quality polymer film, it supports standard and widescreen monitors across various aspect ratios. EASY INSTALLATION: The privacy cover installs quickly and securely. Designed for simplicity, it includes clear instructions to ensure proper application without hassle. BLUE LIGHT & ANTI-GLARE EYE PROTECTION: In addition to privacy, the filter helps reduce blue light exposure by 60% and minimizes screen glare. With a 3H hardness rating, it also adds a layer of scratch resistance to help protect your display.