3M Privacy Filter for 19" Standard Monitor (5:4) (PF190C4B) (Personal Computers)

This privacy filter is great for a peeping eye in the office, or when people hang around your desk and you're still trying to get work done. I bought it due to a coworker having a great experience with it. It does successfully block eyesight from each side, so someone would actually have to try to look and see what you're doing. I have to add though, I don't love it because I have a curved monitor, and the filter does not fully stick on my monitor. It pops up sometimes, which creates a double-vision effect that can really bug out my eyes. It's annoying that I have to keep pushing it back, but that doesn't even really do anything. For almost $200, I would expect it to fit better on my monitor. It does absolutely get the job done, and I'm sure if you don't have a curved monitor it would work great for you.

Update: Had this for about a week now and I love it. It seems to have a tinted window effect that lowers the brightness of the screen and has reduced eye fatigue a lot. Must be a combination of anti-glare (using the matte side) and the darker tint since reducing the brightness/contrast of the monitor did not help.I bought this filter for its glare reducing properties. It has two sides: gloss or matte. The gloss side looks like a mirror and reflects all light. The matte is better defeating glare, but still reflects some light. Actually the LCD monitor I have is better are defeating glare, but not enough. After putting the filter on it has like a car tint effect that reduces a lot of the glare. The dimensions are perfect. Make sure you measure as perfect as possible, and before opening the package use the provided rulers printed on the package to verify your size. The installation is simple with the provided clear adhesive strips. The strips can barely be seen...Read more

This filter is excellent! It works perfectly. You can see the screen clearly while you are facing the monitor but it fades quickly to black as the angle from the screen increases. The screen is completely black from a 45 degree angle is and is fuzzy / grey from about 20 degrees. Our secretary uses it to keep all of the human resource and accounting information secure. The filter provides time for her to minimize work or lock the computer before someone can stand over her shoulder to see privilaged information.If you are expecting to be able to keep people from seeing what is on your screen while they walk behind you, forget it. But, if you need to keep people from running up to the side of your computer or merely peering over a shoulder from an angle, this filter will work great for you. Other people have stated this filter doesn't work, or that it was not what they expected, but it will do everything 3m says it will do.I agree with others stating that...Read more