Watch out for peephole reversers – enable a user to look through a peephole from the ‘back end’.

Watch out for peephole reversers – enable a user to look through a peephole from the ‘back end’.

They’re sorta used like this: https://imgur.com/Jddthxw

They sorta work [yt link]. Invidious link, go to 18m57s

To circumvent tape a paper hinge to the inside of your door. 1, 2

Also, even without a peephole reverser, it’s possible to see the light change when the peephole is in use

submitted by /u/AfterJuggernaut to r/privacy
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top scoring links : multi

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