
LCD Monitor For Your Eyes Only 113
Bryan_Casto writes "USAToday has an article about Sceptre's new LCD monitor, which hides the screen image from anyone not wearing the glasses that come with the monitor. The screen appears white to ordinary eyes, but with the polarized glasses, the desktop comes into view. "
Maybe make it an option? (Score:1)
unix support? (Score:1)
Re: LCD can be Tempest'ed (Score:1)
Only works with Windows??? (Score:1)
How in the world does it do that??? I haven't seen my windows desktop since it vanished into nothingness after I issued the 'mke2fs
Re:Interesting... (Score:1)
The application for these glasses was to darken the lens over each eye in an alternating sequence that was in sync with alternate displays on the screen to allow for truly awesome 3D displays (so I was told).
I see no reason why the same technology couldn't be used to obscure the screen from unintended viewers in a more secure way than polarization.
Re:Back in the days... (Score:1)
I wonder how you'd use a laptop that had been modified for use with the special glasses if you wanted to lie down or otherwise sit at a funny angle while using it. One of the advantages of laptops is that you can sit in odd manners while using them, but with this modified screen the image could disappear if your head is at the wrong angle (because the magic glasses have polarized lenses).
Re:Used to do this... (Score:1)
(Or you could carry a slide rule... nobody ever asks to borrow my slide rule... but slide rules aren't programmable
Re:They Live! (Score:2)
We were sitting around yelling, "More commercials! No! Not the movie! Ahhh! We want to see more commercials!" at the TV screen.
Anti-Glare Filters (Score:1)
I don't get it. (Score:2)
No one will buy this at home. If you're single, you don't need to hide anything. If you're married your spouse will want to know if your doing something you shouldn't. (Will cause many headaches and arguments.)
The only possible customer would be those working on confidential/secret/top secret documents and I doubt the Govt. is going to spend extra money for this.
I think this monitor will have a very small clientelle. Maybe conspiracy theorists...
Misfit
Re:Back in the days... (Score:1)
Re:Polarized Sunglasses? (Score:1)
Anyone notice this company's slogan? (Score:3)
Ironic, eh?
Porn at work... (Score:2)
Now you can view pr0n at work! (Score:1)
Re:Rotating head (Score:2)
---
"'Is not a quine' is not a quine" is a quine.
Tempest? (Score:1)
What About Reflections? (Score:2)
According to previous posters, this works by taking the top polarizing filter off the LCD panel and putting in some "sunglasses" instead.
So, don't look directly at the panel. Look instead at its reflection in the surface of the desk. Most surfaces reflect polarized light. This is why Polaroid sunglasses work at all; they reduce glare by mounting polarizers at 90 degrees to the polarized axis of the reflected light.
Since the light coming off the panel is already polarized, when it bounces off the surface of the desk (which is a natural polarizer), the display's reflection should be somewhat intelligible. They have an exhibit demonstrating this sort of thing in San Francisco's Exploratorium [exploratorium.edu].
Schwab
You should only buy one per office (Score:1)
A very silly screen.
--
Re:Nothing new here (Score:2)
Another form of security through obscurity?
--
Why not just LCD glasses then? (Score:1)
Re:It was good... (Score:2)
Nothing new here (Score:2)
This is just a normal LCD display with the front polarizer removed. Anyone else with a polarizer could see it too.
Re:Tempest? (Score:1)
-----------------------------------------
If you need to point-and-click to administer a machine,
It was good... (Score:1)
Of course, people would start getting frustrated. Why, you could be viewing porn right on the subway and no one would notice
you can even build one on your own (Score:1)
display) and removed the film in front of the
glass with the liquid in it.
then you only can see the digits if you place
the previously removed film in front of your eyes.
ff this principle is usesd in this displays then
you can build one on your own. just remove the
film... done.
Re:It was good... (Score:1)
My wife is an accountant, but she has to cover for the receptionist when the receptionis is at lunch. She always bitches that she has to drop everything to cover, because she can't do her accounting stuff at the receptionists desk (even though everything is networked and she COULD do it but - ) becuase the computer is in a public area and she can't have everyones salary information displayed on that screen.
This would be perfect for that situation.
-geekd
Re:Porn at work... (Score:1)
then no one could see it!
HEY! Why don't our military guys all wear polorizer suits and glasses! The they could see each other, but to the enemy, they'd be invisible!
:-)
-geekd
Yes, but... (Score:2)
The problem with wearing these in public, like on the subway, is that you also get to (unfortunately) see all the other signs that already use this technology subliminally [imdb.com]. All those "Obey" and "Sleep" and "Marry and Reproduce" signs would get depressing after a while.
For what use? (Score:1)
A better solution (That does exist, but not for the public market, from what I know) is glasses with a built in projector that projects the picture onto the back of the eye-globe... No one except you can see what it projects, and you can get as large picture as you want (A 2m^2 screen at a distance of 1.5m, or any other size and distance).
Do it yourself (Score:1)
1. Remove the polarised panel that is on top of the actual lcd screen. (may not easy or even possible)
2. Buy polarised sunglasses.
3. Surf to playboy.com
This can also be done with calculators and digital watches etc. (I've done it)
how are they going to sell this? (Score:1)
also, do you have to keep your head perfectly vertical at all times? that sucks. (i don't know how lcd's operate.)
- pal
Back in the days... (Score:1)
Everything old is new again...
--John Riney
jwriney@awod.com
Re:Back in the days... (Score:1)
--John Riney
jwriney@awod.com
Re:I don't get it. (Score:1)
This is one of those things that comes under the category of keeping honest people honest. Most people won't sit down and search through their boss's computer for someone else's performance review, but they might read what just happens to be on the boss's screen.
This is all assuming that the product lives up to it's hype, which I doubt.
Off-topic... (Score:1)
NASA realized in the 60s that traditional pens were useless in the microgravity, unpressured environment of space - there was no "down" for the ink to flow to. A million-dollar contract was awarded to a high-tech firm who solved the problem in a high-tech way by creating a pressurized ink cartridge which forced the ink out, even in outer space. The Russians, facing the same problems but strapped for cash, sent their cosmonauts into space...with pencils.
3D Glasses (Score:1)
In high school, my friend removed the appropriate film from his calculator, as others here have described.
This was in the early '80s, when `Friday the Thirteenth part III in 3-D' was out, as well as other 3D movies that used polarizing glasses. So one eye saw black-on-white and the other eye saw white-on-black.
Even better, the glasses that he needed to view his calculator were decorated with fireplace-pokers with blood dripping from them, hockey masks, etc. He also had glasses from `Jaws 3 in 3D' and a Molly Ringwald movie called `Space Hunter' (iirc) -- but the two were *combined* into one pair of glasses. So this had shark fins and space ships on it. Man, I envied him.
TI LCD calculators work great... (Score:1)
Re:Off-topic... (Score:1)
Re:Back in the days... (Score:1)
You can easily try this with the average $1 calculator. Just open it up and take the top layer of the display. The only way to view it is with the little piece of plastic in front (Or with those expensive (well, they used to be anyway) sunglasses, wich are really just the same stuff. I think you'd be able to view the laptop with them aswell). Extra fun: Turn the polarisation filter 90 degrees, and you get the negative! Idem for laptops iirc.
This technology already exists. (Score:1)
Anyway, you thought up a neat idea and the technology already exists - it could definately be applied to this privacy idea somehow I'm sure.
--Sonet
paul.levitz(AT)hbcsd.k12.ca.us
Nice idea. (Score:1)
--
"take the red pill and you stay in wonderland and I'll show you how deep the rabitt hole goes"
Re:tedious... (Score:1)
--
"take the red pill and you stay in wonderland and I'll show you how deep the rabitt hole goes"
Re:Back in the days... (Score:1)
It would really rock if someone could do this with plain ol' CRT's. I'd get all my monitors done.
That way, you could just peel off the film or whatever, just in case you lost your glasses.
Speaking of which. With this system, are each pair of glasses tuned to the LCD, or is it a generic thingy?
-------------------------------------
Aww that wouldn't work (Score:1)
Though the polarity of the sunglasses wouldn't necessarily be the same... you'd have to turn your head sideways
Stealth Laptops (Score:3)
And if you really wanna be smooth, try painting over the characters on the keyboard so you have a completely blank terminal in front of you. My thinkpad looks cool this way.
Check out Rendezvous With Rama.... (Score:1)
Write a HOWTO!!! (Score:1)
I know they're just curious but it's unsettling. It's like people who constantly stare at you in public. I don't like it.
This stealth laptop thing looks like a really good idea. Try putting it in a HOWTO and announcing it on Freshmeat.
A lot of people will probably thank you.
Re:Do it yourself (Score:1)
Re:Interesting... (Score:1)
Polarization by LCD's and glasses is not as accurate as you seem to imply. A small change in angle will only change the image slightly, not make it disappear. For that, you need a rather large change in angle (probably > 10 degrees).
So, anyone with polarizing glasses and a flexible neck, or anyone with an adjustable polarization filter (as used on camera's) will be able to read the display.
Also, this is not really `new'. It has been around for at least a year by now...
Cheers//Frank
Rotating head (Score:1)
tedious... (Score:1)
Personally, I'd find it rather tedious and annoying to have to wear all the glasses at once so I could see the entire screen, because I wouldn't want to have to constantly switch glasses to look at different parts of my screen.
However, I think it's an ok idea, but if it can be done by oneself, I certainly would instead of buying that gizmo for all that money. It's a major rip-off. I have an LCD screen on my laptop, but I don't worry about it, or about what people might see. If it's that big of an issue, do it on paper so you can destroy the evidence. =)
Re:It was good... (Score:1)
shutter won't work (Score:1)
Re:Interesting... (Score:1)
As far as polarization needing more than a small turn - yes that is true, didn't even think about that. I also though later that LCD shutter glasses might not even work properly, unless perhaps they were times to the horizontal refresh, and not the vertical.
I guess I need to get back to thinkin'!...
Interesting... (Score:2)
Now, if the polarizer on the front and back of the LCD could be positioned at a different angle (and at very minute steps), the 90 degree twisty thingy would still work (since the LCD is probably standard), but you would need the glasses to be at the same angle in order to view the image. These glasses, of course, would be matching glasses to the LCD (order many pairs!), and if the manufacturer varied the angle at small angles (and even possibly a different random angle on each LCD made in sequence), then each monitor would be unique (sorta like Master Lock Combo Locks are unique). However, I doubt any manufacturer would do this...
There are, of course, problems with such a system - mainly, you need to hold you head level - any deviation and the screen goes blank (of course, this affects the current set up). You would also have co-workers running around the office with polarizing sunglasses on waggling thier heads crazily (Ow! My neck! Workman's comp!) - I don't know which would be funnier; guessing who is looking at pr0n or watching the head wagglers!
Anyhow - no matter what - this is security by obscurity at best. But how about this...
What if the glasses were active - say high speed shutter glasses timed to the refresh rate of the monitor. Now, if the monitor refresh rate could be changed on the fly, using some kind of method whereby it could read some code from the glasses being used to view the monitor, and it would lock onto a sync generated by the glasses or something to change the refresh and the flicker speed of the glasses to match. Then, only the first person viewing the monitor would see what he should see! Does this sound feasible?
Re:Tempest? (Score:1)
Re:Tempest? (Score:1)
Re:Interesting... (Score:1)
1. the "high speed shutter glasses" would probably vibrate horribly from having to click open and shut god knows how many times per second, also they would probably be really heavy so they could include all the parts that make it do this. I would expect that the first generation of this (at least) would be full head sets to distribute the wieght and vibrations.
2. iirc, the monitor does not cycle between showing the whole screen at once and being black x times per second, but rather it has a point of light that races across the screen continuously (probably top left to bottom right). therefore, the refresh capability of the monitor would have to be high enough that it could quickly cover the whole screen while your shutter was open, then display something while your shutter was closed that was sufficiently different to prevent other people from being able to tell what the real image was AND cycle the whole thing fast enough so that your personal refresh rate was decently high. The hardest part would be designing the confuser image, which would probably have to be quite dynamic to fool everyone.
And then there is the problem of setting up a secure, dependable and wireless conection between glasses and monitor. In any case, it could work someday when have sufficiantly advanced components to work with (and someone feels a need for this level of security), but (not that i really know about these things), i don't think it would work too well right now.
Re:Why not just LCD glasses then? (Score:1)
Wow, Über Monitor Tempesting... (Score:1)
=P
They Live! (Score:1)
Maybe we'll all discover that our managers are from another planet after all. No wonder they just don't get us...
They're putting dimes in the hole in my head to see the change in me.
Re:They Live! (Score:1)
I don't think it was that bad, but I don't have any delusions about it being a great movie, either. The scene that you're referring to, though, was indeed a great scene. They showed it on campus a couple years ago, and my friends and I laughed our asses off (loudly) at a late showing of it, no scene making us laugh more than that one.
They're putting dimes in the hole in my head to see the change in me.
Amazing new innovation (Score:1)
"No, really, I'm using it for... confidential information..."
Old news (Score:1)
Bees (Score:1)
Re:Not quite... (Score:1)
(Yes, they see colors in ultraviolet, too.)
Re:Maybe make it an option? (Score:1)
---
Used to do this... (Score:1)
Re:Stealth Laptops (Score:1)
Oooohhh (Score:1)
I used to take the polarizer off calculators when I was 8 so only i could see it.
But what does it _do_? (Score:1)
But aside from viewing porn, playing quake without your mom knowing, or combining it with PGP to hide _everything_, it doesent have to much application. eventually, these may be used like passwords, your pair of glassed can see things others cant, like on a public screen facing a city. just look at it and see your own private message.
What if... (Score:2)
Glasses off
Glasses on
Re:Yes, but... (Score:1)
"No!"
*pow*
*pow*
*pow*
Ahhhhhh, that was a *weird* movie...
Re:For what use? (Score:1)
a) casual observers (e.g. people next to you on an airplane). This might be important if you're on a deadline and you need every bit of work time you can get...
b) things like security cameras and such from capturing whatever's on your screen (although, if they see you typin' away on a supposedly perfectly white screen, the more paranoid sec staff might get curious...). This would be an unusual case, perhaps, but possible.
Polarized Sunglasses? (Score:1)
Hmmmm... (Score:1)
OR, you could close your door.
hi tech that one
Re:It was good... (Score:1)
And ultimately, the market will decide. If the yuppies buy them, great, good idea. No, that's does't make it a neat science, but it makes it a viable business.
"Don't feed the animals".