From Newsgroup: sci.misc

WiFi signals can measure heart rate--no wearables needed

Engineers prove their technique is effective even with the lowest-cost
WiFi devices


The Pulse-Fi system is highly accurate, achieving clinical-level
heart rate monitoring with ultra low-cost WiFi devices, making it
useful for low resource settings.

The system works with the person in a variety of different
positions and from up to 10 feet away.


https://news.ucsc.edu/2025/09/pulse-fi-wifi-heart-rate/


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From Newsgroup: sci.misc

In <109fu87$2o3lt$1@dont-email.me> JAB <here@is.invalid> writes:

WiFi signals can measure heart rate--no wearables needed

Engineers prove their technique is effective even with the lowest-cost
WiFi devices

The Pulse-Fi system is highly accurate, achieving clinical-level
heart rate monitoring with ultra low-cost WiFi devices, making it
useful for low resource settings.

The system works with the person in a variety of different
positions and from up to 10 feet away.

https://news.ucsc.edu/2025/09/pulse-fi-wifi-heart-rate/

I read similar stories decades ago where the DOD was trying
to use radio transceivers (this is way pre-WiFi days) to look
at a battlefield to locate our wounded soldiers who were
still breathing [a].

No idea what came of it, but the UCSC folk might want
to look at that research

[a] what they didn't, of course, say publicly is this
could also detect enemy soldiers and help target them...
--
_____________________________________________________
Knowledge may be power, but communications is the key
dannyb@panix.com
[to foil spammers, my address has been double rot-13 encoded]
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From Newsgroup: sci.misc

On Sat, 6 Sep 2025 00:52:19 -0000 (UTC), danny burstein
<dannyb@panix.com> wrote:

No idea what came of it,

"EW [electronic warfare] has evolved to the point where even brief
radio transmissions can be intercepted and geolocated with deadly
precision. Traditional combat radios, particularly those using
high-power, high frequency, very high frequency and ultra high
frequency transmissions, are especially vulnerable.

In the invasion of Ukraine, early in the conflict, soldiers using
these radios were said to be targeted by artillery strikes within just
a quarter of an hour of making a transmission. As EW systems have been
refined, however, the time from detection to strikes have been reduced
yet further, to a few minutes.

With every technological leap in EW, military forces must rethink how
they communicate. The era of casually using a radio and expecting
operational security is very much at an end." https://www.thalesgroup.com/en/countries-europe/united-kingdom/news/staying-hidden-digital-battlefield-need-low-probability

but the UCSC folk might want to look at that research

Their citations showed the scientific trail they followed...they have
a medical focus.

could also detect enemy soldiers and help target them...

See above cite...."One of the simplest, yet most effective ways to
reduce detectability, is to transmit at the lowest necessary power
level."

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