I had really high hopes for this privacy filter when I ordered it, but stopped using it immediately after installing it. The privacy feature is too bad for me, so I didn't dare to use it while commuting. On the other hand, everything about privacy depends on how much privacy you need. In this case, I think the developers of this privacy filter placed more emphasis on screen brightness than absolute privacy. This means you can see what the person next to you is doing on their computer, but it's really difficult to read or understand anything useful on the screen. But you see open windows and colors on the filtered screen, you can recognize MS Word, Excel etc. but you cannot read the content. This should be compared to other privacy filters when the screen of the person next to you goes completely black. So the privacy offered by this filter wasn't enough for me, but others might be fine.
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