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camera recording prevention

camera recording prevention
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In order to prevent camcording you could use some 3m IR reflective film (link #1) cut in an ugly shape and laminated onto the theater canvas and a 20,000 Watt illuminator (link #2)

It would effectively blind a conventional CCD Camera.
ariha, Jan 03 2004

link #1 http://www.3m.com/u...ior_pages/srf.jhtml
[hippo, Oct 04 2004]

link #2 http://www.electrop...tegoryId=94&Area=NV
[hippo, Oct 04 2004]

Burned http://www.boingboi...ed-leds-make-y.html
Infrared LEDs make you invisible to CCTV cameras [Dub, Feb 21 2008]

Image Fulgurator http://juliusvonbis...image-fulgurator/2/
A solution to this problem, but only applicable to disruption of flash photography [notexactly, Mar 07 2018]

[link]






       [Admin: Made title lower-case (upper-case is reserved for acronyms) and moved URLs to 'link' list]
hippo, Jan 03 2004
  

       Wouldn't people just be able to use a video camera with an IR filter on it?
hippo, Jan 03 2004
  

       An infrared filter does not filter infrared, but allows only infrared through same principle as Sony nightshot but way stronger
ariha, Jan 03 2004
  

       An alternative method for preventing the illicit videorecording of projected movies might be to design projectors so that rather than flashing each frame on the screen twice, using two rather long flashes, it instead scanned each frame three times from left to right (for a scan rate of 72fps) using a fairly narrow (but bright) stripe.   

       Viewers in the theater wouldn't be likely to notice anything unusual, but video-recorded copies would have ugly vertical or diagonal stripes (the exact nature would depend upon the device).   

       A 30Hz frame-capture camera would have a vertical stripe which was 2/5 the width of the screen, swept across the screen 12 times/second, and was 50% brighter than the rest of the screen.   

       A 60Hz frame-capture camera would have a vertical stripe that was 1/5 the width of the screen, swept across the screen 12 times/second, and was twice as bright as the rest of the screen.   

       A line-scanning camera would have a diagonal stripe (maybe 30 degrees from horizontal) that was 1/5 the width of the screen. swept across the screen 12x/second, and appeared about 50% brighter than the surrounding screen.   

       In the event that 72Hz flicker was annoying to viewers, 96Hz scanning could be used instead. The video artifacts wouldn't be quite as bad (30Hz frame cameras would have a stripe 1/5 the screen width that was 33% brighter than the rest of the screen that would sweep 6 times/second; 60Hz and line cameras would have a stripe 2/5 the width of the screen that was 33% dimmer than background which swept left 12x/second) but they'd likely still be severe enough to make the resulting videos unsatisfactory for most would-be viewers.
supercat, Apr 11 2004
  

       There are several emerging projection systems, both for digital and conventional cinema designed to prevent camcorder capture through beat-frequency interference or similar. Some of the schemes add watermarking as well.   

       Kodak has a patent on one of them but Sarnoff is researching them as well.
bristolz, Apr 11 2004
  

       // An infrared filter does not filter infrared, but allows only infrared through same principle as Sony nightshot but way stronger //   

       That's an IR-pass filter, but IR-cut filters exist too… and just about every color digital camera already has one built in, because the colors would look wrong without it! [-]
notexactly, Mar 07 2018
  

       Or you could just hire someone tall with a huge bushy hairstyle, (like Robert Smith, maybe) to sit in the front row loudly eating endless packets of crisps and farting, slurping drinks and getting up periodically to go to the toilet, thus rendering the camcording as annoying as an in-theatre viewing.
Edie, Mar 09 2018
  
      
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