Show HN: Glasses to detect smart-glasses that have cameras

Re:Show HN: Glasses to detect smart-glasses that have cameras by nullpxl on Friday November 28, 2025 @03:25AM (#46076701)

One of my future ideas was to have the detection trigger turning a bunch of IR LEDs on to do just this! I've only tested it a little bit against my phone camera (with around 5 850nm LEDs), but it didn't work super well (fairly bright but not enough to be useful). It did work much better in low-light though. My guess is modern cameras have better IR-cut filters, but like I mentioned I only tested against my phone and not the Ray-bans yet.

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Re:Show HN: Glasses to detect smart-glasses that have cameras by spacedoutman on Friday November 28, 2025 @03:38AM (#46076779)

Have you thought about the potential eye/skin damage you would be causing with IR LEDS.

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Re:Show HN: Glasses to detect smart-glasses that have cameras by card_zero on Friday November 28, 2025 @04:12AM (#46076981)

Potentially as much as none, because it's UV that does the damage?

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Re:Show HN: Glasses to detect smart-glasses that have cameras by thih9 on Friday November 28, 2025 @04:20AM (#46077024)

I guess IR can be harmful (IR lasers, military grade IR LEDs). But yes, likely not the consumer grade IR LED.

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Re:Show HN: Glasses to detect smart-glasses that have cameras by consp on Friday November 28, 2025 @06:52AM (#46077827)

At some point it pretty much becomes a microwave. Radiation get absorbed and turned into heat. On a small scale not very helpful or harmful. On a larger scale nice to heat your food with but not your head.

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Re:Show HN: Glasses to detect smart-glasses that have cameras by nimih on Friday November 28, 2025 @09:58PM (#46084858)

You'd have to be moving pretty fast to red-shift IR radiation into microwaves, I think.

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