It is similar to vertical blinds, they are only visible when they are turned at an angle. Tiny polarized blinds, sometimes called micro-blinds, allow you to see what's on your computer screen, but not the people lurking to your left or right. The thinner the blind person, the more light is able to pass through the target user. Polarized plastic sheets use the same technology as privacy filters used in polarized glasses, where optical filters block light from specific angles. Depending on the make and model, computer privacy screens will often start blocking visibility at around 30-degree angles, and may show a black screen around 60-degree angles.

Why do we need a computer privacy screen?

Many users worry that their online activities will be digitally monitored by their bosses, their internet providers and even government agencies. Whether or not these questions are valuable, it's important to remember that monitoring doesn't just exist in this way. Unskilled voyeurs can also spy on you. In a global trial, a white hat hacker succeeded in visually stealing information 91 percent of the time. But in nearly half of the trials, an undercover vision hacker was able to gather information in 15 minutes or less and didn't spot him. So we urgently need a computer privacy screen to protect our own privacy and some confidential documents.