A Privacy Filter is a screen accessory designed to protect sensitive information displayed on electronic devices like laptops and tablets. It works by limiting the viewing angle, so only the person directly in front of the screen can see the content clearly. This helps prevent unauthorized viewers from seeing private data in public spaces. These filters are commonly used in workplaces, schools, and during travel to enhance security. They can be easily attached and removed, making them a convenient solution for individuals concerned about their privacy. Many filters also offer additional benefits, such as reducing glare and protecting the screen from scratches.