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286 points pavel_lishin | 6 comments | | HN request time: 0.856s | source | bottom
1. chaps ◴[] No.43551684[source]

Had the experience of poking at tracking dots recently for circumstances I won't share here.

Do y'allself a favor and get a blue LED flashlight and point it at a color print. It's shocking how many are printed. It looks like a spattering of sand across the entire page!

replies(3): >>43552204 #>>43552551 #>>43553266 #
2. atVelocet ◴[] No.43552204[source]

Are we talking about laser, color laser and/or ink printers?

3. timewizard ◴[] No.43552551[source]

It's not even just for printers anymore.

https://datadotusa.com/technology.htm

replies(1): >>43554322 #
4. RachelF ◴[] No.43553266[source]

I'm surprised there's not been a class action against printer manufacturers for all the extra yellow toner that's been used.

replies(1): >>43560025 #
5. ale42 ◴[] No.43554322[source]

Not exactly the same thing. This is more akin explosive tracers, i.e., lots of small particles that contain some identifying information.

6. kmoser ◴[] No.43560025[source]

Not to mention failure to accurately print what you sent to the printer. There must be some use case where these "invisible" dots actually undermine the intended output.