Privacy filters are specialized screen protectors designed to limit the viewing angle of a display. When applied to devices like laptops or smartphones, these filters ensure that only the person directly in front of the screen can see the content clearly. This helps protect sensitive information from prying eyes in public spaces, such as cafes or public transport. These filters work by using a technology that darkens the screen when viewed from the side. They are particularly useful for professionals who handle confidential data or anyone concerned about their privacy while using electronic devices in shared environments.