The privacy of this screen is sufficient: people around you may not be able to see your screen well, but they can see your content. In any case, the person behind you can see very well what is on your screen. I think this is normal for most privacy screens. The only thing I don't like is that the filter reduces the brightness of the screen by almost 30% to 40%, making the screen very dark. This prevents me from having that screen on my laptop all the time. I use it very selectively.
Ovimir Diagonally Measured Computer Privacy Laptop Accessories
10 Review
π Enhanced Privacy with 3M Gold Privacy Filter for 23" Widescreen Monitor (GF230W9B)
10 Review
MacBook Pro 15 Magnetic Privacy Screen Protector | Filter for 2017/2018/2019 Touch Bar Models (A1707/A1990) | Includes Webcam Cover Slider & TPU Keyboard Cover
11 Review
Enhanced Privacy with 3M Privacy Filter for 14 Inch Widescreen Laptop - Flip-Share COMPLY Attachment, Gloss/Matte Reversible, Blue Light Reduction, Screen Protection, 16:9 Aspect Ratio (PF140W9B)
10 Review