| ▲ | TowerTall 5 days ago |
| Everyone’s heart is different. Like the iris or fingerprint, our unique cardiac signature can be used as a way to tell us apart. It can already be done from a distance using lasers [1]. [1] https://www.technologyreview.com/2019/06/27/238884/the-penta... |
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| ▲ | transpute 5 days ago | parent | next [-] |
| https://www.theregister.com/2025/07/22/whofi_wifi_identifier... | https://news.ycombinator.com/item?id=44685869 > Researchers.. developed.. a biometric identifier for people based on the way the human body interferes with Wi-Fi signal propagation.. CSI in the context of Wi-Fi devices refers to information about the amplitude and phase of electromagnetic transmissions.. interact with the human body in a way that results in person-specific distortions.. processed by a deep neural network, the result is a unique data signature.. [for] signal-based Re-ID systems |
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| ▲ | nashashmi 5 days ago | parent [-] | | Tracking people walking through malls. Or even better: tracking everyone in the sidewalk of a NYC street after they commit a crime and where they end up at. | | |
| ▲ | palata 5 days ago | parent | next [-] | | Don't we have phones for that? | | |
| ▲ | anonporridge 5 days ago | parent [-] | | That only catches the stupid criminals, which to be fair is most of them. | | |
| ▲ | palata 4 days ago | parent [-] | | Not sure how many criminals that catches, but phones most certainly track everybody. | | |
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| ▲ | pempem 5 days ago | parent | prev [-] | | Ah yes, tracking everyone. The one system that only leads to good outcomes. | | |
| ▲ | lemonberry 5 days ago | parent [-] | | Well, we know that tracking "everyone" would only lead to tracking a subset of everyone. A subset with a lot less money and power than those in charge of the tracking. Much like the guard or observer in the panopticon. | | |
| ▲ | nashashmi 4 days ago | parent [-] | | It might cause people to carry WiFi jammers. | | |
| ▲ | transpute 4 days ago | parent [-] | | > WiFi jammers Any active RF broadcasting device would function as a "look at me" homing beacon. |
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| ▲ | knowitnone2 5 days ago | parent | prev [-] |
| fingerprints don't change, heartbeats do. Every heartbeat is different so it'd be difficult to even tell which heartbeat is yours for any giving signature. |
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| ▲ | TowerTall 5 days ago | parent [-] | | from the linked article: But gaits, like faces, are not necessarily distinctive. An individual’s cardiac signature is unique, though, and unlike faces or gait, it remains constant and cannot be altered or disguised. |
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