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Making a Privacy Monitor From an Old LCD
ryzvonusef writes "Instructables Member 'Dimovi' utilized a spare LCD monitor and converted it into a 'privacy' monitor. He took apart the monitor's plastic frame, cutting out the polarized film with a utility knife and removed the film adhesive from the glass panel before reassembling the monitor, which now shines a bright white regardless of what is actually being displayed on the screen. He then removed the lenses from a pair of theater 3D glasses, and replaced it with the polarized film he had just removed from the monitor. Now, he is the only one who can see what he is doing on his computer."
Very interesting hack. It would be perfect for laptops that are used while travelling (watching pr0n during your flight?).
I wonder how easy or difficult it would be to hack a notebook screen.
lol, captcha: decency
Cool and clever hack. But it assumes that what you're displaying on the screen is more embarrassing than being seen wearing 3D glasses. An easier solution would be to just never let anyone into your lair.
http://alternatives.rzero.com/
Sure, unless anyone else is wearing polarized sunglasses in the vicinity.
Immediately thought of This.
Wearing polarised sunglasses indoors is kind of obvious. For someone who works with sensitive information, yet is in a publicly accessible area, this is a genuinely great idea.
Hell, I might even suggest this for my own workstation (back to the door, frequently working on sensitive data). I wear glasses anyway; It wouldn't be difficult to fit the film to the lenses I already require.
Finally had enough. Come see us over at https://soylentnews.org/
When you don't want anyone seeing what is on the screen aren't you usually naked? Glasses aren't going to hide much, IMHO.
Having to work for a living is the root of all evil.
Sony kind of came out with that...the Playstation Display allows for two people to play fullscreen simultaneously.
I suggested something similar to improve the contrast in the sonar room on submarines, without tripping up the people who were doing other things. Polarize the displays up and down, and the room lights side to side. People wearing polarized glasses could see the displays well, but the glare from the room lights would be diminished.
I think the first description of such a system was in a golden age science fiction story. Car head lights were polarized diagonally. You'd wear glasses that allowed your light to be bright, but oncoming ca's headlights would be reduced. Of course unsuspecting pedestrians would be blinded.
All ideas^H^H^H^H^Hprocesses in this post are Patent Pending. (as well as the process of patenting all postings)
Recycling is cool and all, but it's not like this is a new / unique / unanticipated capability:
http://solutions.3m.com/wps/portal/3M/en_US/SDP/Privacy_Filters/
William
Sphinx of black quartz, judge my vow.
surely a graphics programmer could coax an Nvidia/Ati card to give the same effect ?
It's been done. See an example here
Yes, it is what you're expecting.
Finally had enough. Come see us over at https://soylentnews.org/
With a 3d monitor, it could be interesting to try. For 1 'eye', output the normal image. For the other, output exactly the opposite image. For normal vision, it would look like a solid image, but wearing 1 half of the 3D Glasses should give you the normal image.
I think I'll try this later, with the standard 3D image viewer app.
"If you make people think they're thinking, they'll love you; But if you really make them think, they'll hate you." - DM
Iirc polarizing sun glasses always have horizontal polarization (or was it vertical, can't remember, it's basically aimed at removing the rays reflected off water surface).
You can require exact opposite polarization here, meaning that sunglasses wouldn't work.
I did a quick test at my desk with my polarized sunglasses and two different monitors. Both blocked the light when I tilted my head 45 degrees to the right and it was at full brightness 45 degrees to the left. The image only was completely blocked in a very narrow range.
I love Jesus, except for his foreign policy.
Pffftrrrt. Wake me up when they come up with a polarized PROJECTED image with seperate frequencies for each viewer. That would be kindof impressive.
I think we can keep recursing like this until someone returns 1
Yes, it is utterly irresponsible to expose unprepared and untrained people to the unspeakable horrors of O***le, M**QL or S** Server...
Speak not their names lightly.
Sunglasses have horizontal polarization. It's aimed at preserving the light reflected from horizontal surfaces, while filtering half of the light comming directly from the Sun.
Rethinking email
Didn't we just spend the last 20 years designing laptop/lcd flatscreens so that they didn't have the damn single-point-of-viewing issue? I seem to recall the original, dim LCD screens being an enormous pain in the butt because if you moved your head about 3" to either side, you couldn't see anything.
-Styopa
Sunlight is fully unpolarized, therefore it will not be hindered by polarization ... polarizing has no effect on brightness of unpolarized light (beyond the impact of filter's imperfect optical properties of course).
You are wrong.
http://en.wikipedia.org/wiki/Polarizer#Malus.27_law_and_other_properties
A beam of unpolarized light can be thought of as containing a uniform mixture of linear polarizations at all possible angles. Since the average value of cos^2 theta is 1/2, the transmission coefficient becomes I / Io = 1/2.