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I've been in IT for over 40 years, and this is the best screen I've seen to protect against the sneaky stealing of login name/password or data on screen that I've seen in that time. I sometimes have to use a coffee shop wifi for emergency remote sessions to fix problems on different sites and while a VPN gives privacy to data transmissions, only a good privacy screen can stop someone beside you from seeing what they shouldn't. Of the three different screens I've tried this is the best.