If you want complete privacy while using your computer, and you have an old monitor and 3D glasses gathering dust in your closet, here’s a hack from Instructables to help you.
Let’s face it, there are times when you don’t want people to see what you’re doing on the computer, whether you’re shopping for Christmas gifts or browsing Walyou while you should be working. But this project is pretty clever. To observers who aren’t wearing the glasses, you’ll appear to just be looking at a white screen, albeit wearing some cool shades.
First, you’ll need an LCD monitor. It’s best to use an old one instead of your spiffy new screen you use for gaming. You’ll have to disassemble it and cut out the polarized screen inside the monitor with an X-Acto knife.
Although this may sound obvious, we should warn you to be extremely careful doing this, since monitor manufacturers generally don’t expect their customers to open them up to take out polarized screens to make things like this. It’s possible to seriously hurt yourself with electrical devices even if they’re turned off, especially with capacitors.
The author of the hack, dimovi, used 3D glasses from a local theater, but I suspect any old pair of frames can be used for this hack. Just pop the lenses out and scan the frames. If you have a laser cutter, you can cut out part of the film to use for the lenses using the exact shape of the frames you just scanned. The hack also has links to firms who will do this for you.
Once you have your lenses all cut out and shaped, pop them into the frames, and now you have a completely private screen, unless your friends see this hack and make their own glasses to see what you’re looking at.
You might also want to read about several TV manufacturers standardizing 3D TV and if you’re still in a DIY mood, how to make a folding ukelele.