Tired of people looking over your shoulder while you use the computer? This hack could be the answer to your problem — it renders a monitor completely blank to anyone not wearing a special pair of glasses. Instructables posted step-by-step instructions on how to make your very own privacy monitor out of an old LCD screen, which is perfect if you just bought a new one on Black Friday or at a Cyber Monday sale.
The hack requires a few tools such as a cutter, x-acto knife, super glue, screwdriver, paint thinner, and of course, a pair of glasses. The secret lies with the LCD's polarized film that filters out backlight so we see what's there to be seen on the screen. With tools and a steady hand, you'll have to dismantle the LCD, remove the polarized film, and use it to make new lenses for your glasses.
It's not something you can do within five minutes or without the proper tools. But if you have the time and the equipment, it's a pretty easy project you can undertake if privacy filters are not enough for your needs.
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