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WiFi signals can measure heart rate

(news.ucsc.edu)
463 points bookofjoe | 2 comments | 04 Sep 25 14:53 UTC | HN request time: 0.001s | source
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TowerTall ◴[04 Sep 25 18:00 UTC] No.45130214[source]▶
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...

replies(2): >>45130436 #>>45134707 #
1. knowitnone2 ◴[05 Sep 25 03:22 UTC] No.45134707[source]▶
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.
replies(1): >>45136265 #
2. TowerTall ◴[05 Sep 25 08:26 UTC] No.45136265[source]▶
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.