It helps keep on-screen information private by limiting the viewing angle to the person directly in front of the screen, while others see a darkened screen.
It is easy to attach and remove.
It is available in different sizes to fit various laptop and monitor sizes.
Some privacy filters have an anti-glare coating to reduce reflections and improve visibility.
They use a technology called micro-louvers, which are like tiny blinds that restrict the viewing angle.
They can be used in public places to prevent visual hacking or to protect sensitive information.
Some privacy filters can be reversed, with one side being matte for reducing glare and the other being shiny for