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  • WiFi signals can measure heart rate

    From JAB@here@is.invalid to sci.misc on Fri Sep 5 19:11:51 2025
    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 danny burstein@dannyb@panix.com to sci.misc on Sat Sep 6 00:52:19 2025
    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 JAB@here@is.invalid to sci.misc on Fri Sep 5 21:47:28 2025
    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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