> “Each watermark carries a low-fidelity time-stamped version of the unmanipulated video under slightly different lighting. We call these code videos,”
If this is the only info that's encoded, then that might not be an entirely bad idea.
(Usually, the stego-ing of info can help identify, say, a dissident who made a video that was critical of a regime. There are already other ways, but defeating them is whack-a-mole, if universities are going to keep inventing more.)
> Each watermarked light source has a secret code that can be used to check for the corresponding watermark in the video and reveal any malicious editing.
If I have the dissident video, and a really big computer, can I identify the particular watermarked light sources that were present (and from there, know the location or owner)?
This is apparently how they located Ben Laden in Pakistan, usisng drones and watermarked sounds.
My last question is a bit different. What if there is a huge number of these watermarked light sources deployed, such as in consumer products, each with a unique code that could be verified against... can you identify which one/few of those millions/billions of devices were present?
(Once you have an identifying code, you can go through supply chain and sales information, and through analysis of other videos, to likely determine location and/or owner/user/affiliate.)
Nope. They used a fake vaccination drive to obtain DNA samples [1], which led to serious distrust in anything "public health" even up until Covid [2].
[1] https://en.wikipedia.org/wiki/CIA_fake_vaccination_campaign_...
[2] https://www.npr.org/2021/09/06/1034631928/the-cias-hunt-for-...
[flagged]
1) Did you not see the big gash in the side from being hit by one of the main towers? You'll have to do some looking to find the images because of course the gash was facing the main towers and thus was mostly obscured by the smoke. Very lousy view, few cameras were pointed that way.
2) They did not fight the WTC 7 fire because the collapse of the main towers took out the water main. Note that it's not that skyscrapers can't be brought down by fire, but that in most cases the fire prevention buys the fire crews enough time to fight the fire.
Thanks!
The spire tore a hole through the side of the building and it was left burning for hours.
https://www.youtube.com/watch?v=KMvCWFCoVN4
Great video.