this post was submitted on 25 Jul 2025
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513
Humans can be tracked with unique 'fingerprint' based on how their bodies block Wi-Fi signals (www.theregister.com)
submitted 1 day ago* (last edited 1 day ago) by bignose@programming.dev to c/technology@lemmy.world
121 comments fedilink hide all child comments
 

The Sapienza computer scientists say Wi-Fi signals offer superior surveillance potential compared to cameras because they're not affected by light conditions, can penetrate walls and other obstacles, and they're more privacy-preserving than visual images.

[…] The Rome-based researchers who proposed WhoFi claim their technique makes accurate matches on the public NTU-Fi dataset up to 95.5 percent of the time when the deep neural network uses the transformer encoding architecture.

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[–] LillyPip@lemmy.ca 26 points 1 day ago (4 children)

Neat. Good luck protecting yourself from this.

On the other hand, I’m seriously considering opening an Etsy shop selling foil-lined clothes. I’m pretty good at sewing. What do you think?

[–] svc@lemmy.frozeninferno.xyz 6 points 1 day ago (1 children)

Then I'll look for the person with the fingerprint of foil-lined clothes

[–] Zer0_F0x@lemmy.world 8 points 1 day ago

Not if everyone buys it, because then we'd all look the same

[–] MysteriousSophon21@lemmy.world 3 points 1 day ago (1 children)

You'd need fabric with continuous metallic threads that form a complete mesh to actually block the 2.4/5GHz signals - most DIY foil approaches leave gaps that WiFi can still penetrate thru.

[–] LillyPip@lemmy.ca 9 points 1 day ago* (last edited 2 hours ago) (2 children)

I feel like you’re overthinking this. There are people who buy crystal-infused drinking cups to reset their personal feng shui. (Spoiler: it’s just glitter.)

I really wish I didn’t have morals. It’s so easy to make money if you’re willing to fleece people.

e: autocorrect

[–] BananaOnionJuice@lemmy.dbzer0.com 7 points 1 day ago

Or sell a "WiFi mask" to modify the signal to look like celebrities.

[–] boonhet@sopuli.xyz 2 points 1 day ago

It's so true. Would you like to buy some Trump memorabilia? Made in 100% American spirit in China

[–] ayyy@sh.itjust.works 2 points 1 day ago* (last edited 1 day ago)
[–] NaibofTabr@infosec.pub 1 points 1 day ago

I think you will be the one guy in the crowd wearing foil-lined clothes.