Have an old LCD monitor laying around just collecting dust after being replaced? Well, here’s one nifty project you can try this weekend. Simply put, this invisible monitor trick involves removing the polarizing filter from the display and inserting the filter into the lens area of a pair of old glasses. If you’re not wearing the specially constructed pair of polarized lenses, the screen will appear blank and white, ensuring that nobody can snoop over your shoulder. Continue reading for a video and more information.

Here’s what Buzzfeed would like to add: “In some situations polarized sunglasses can work, but only while viewing your monitor at certain angles, so you’re better off trying to construct your own pair. While we can imagine a whole host of unsavory things you might be able to do with this hack, there’s no getting around how awesome the demonstration looks.”

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A technology, gadget and video game enthusiast that loves covering the latest industry news. Favorite trade show? Mobile World Congress in Barcelona.