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Polarized Privacy Monitor Hack: Now You See It, Now It’s White

 |  |  |  |  |  |  |  |  November 25, 2011

It may sound like an oxymoron, but the Privacy Monitor is actually a very cool and somewhat practical mod by Instructables user dimovi. Only the wearer of a complementary pair of glasses can see what’s being displayed on the Privacy Monitor; everyone else will only see an annoying white screen.

privacy monitor by dimovi

Dimovi was able to pull this off by removing the polarized film within the LCD monitor and attaching it to a pair of sunglasses. You have to be familiar with polarization to understand how this algebraic trick works. I trust in your Googling skills but for now just know that a polarizer – such as the polarized film commonly found in monitors – is designed to allow only a portion of light waves to pass through it. Watch and be amazed:

The PlayStation 3D monitor works in a similar fashion to allow individual players to see just their half of a two-player game.

Unfortunately the polarization mod is as complicated as the property of polarization. It involves a laser cutter, some solvent and a gerbil. Okay I was kidding about the last part. Go undercover and sneak to Instructables to get the details on the mod. This post will not self-destruct.