Secret digital intrusions into our computers and mobile devices have garnered increasing attention in recent times. But a decidedly lower-tech assault has also been troublesome: shoulder surfing. You know the types: friends, work colleagues and assorted passers-by who walk by you and can’t resist quietly peeking over your shoulder at the content of your screen while you’re blasting the boss, watching cartoons or recounting last night’s passionate encounter with your lover.
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https://techxplore.com/news/2020-03-apple-patent-snoop-proof-screens.html