Screen privacy filters are thin, protective layers that attach to computer or device screens. They work by limiting the viewing angle, allowing only the person directly in front of the screen to see the content clearly. This helps protect sensitive information from prying eyes in public places, such as cafes or offices. These filters are commonly used in workplaces to maintain confidentiality and are available for various devices, including laptops, tablets, and smartphones. They can also reduce glare and protect screens from scratches, making them a practical accessory for anyone concerned about privacy and screen durability.