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Government's secret Celldar project will allow surveillance of anyone, at any time and anywhere there is a phone signal
Originally posted by jpm1602
Foolish enough to use a cretin device like this you got what's coming to you. I 'had' to carry one in the 80's for my job. Remember? when only Dr's and such had them? I hate them with every fiber in my body. Seven years was plenty for me.
Originally posted by Badge01
That way they couldn't tell which one you were using (you could loan one to a family member now and then), even if the tracking showed the phone to be moving.
The technology 'sees' the shapes made when radio waves emitted by mobile phone masts meet an obstruction. Signals bounced back by immobile objects, such as walls or trees, are filtered out by the receiver. This allows anything moving, such as cars or people, to be tracked.
The Bell Labs engineers, led by husband-and-wife team Victor Lubecke and Olga Boric-Lubecke, noticed that some of the microwaves transmitted by a mobile phone's antenna bounce back to the phone from the chest, heart and lungs of the person using it. Because those organs are moving, the frequency of the reflected radiation is Doppler shifted by a tiny amount. If the lung is expanding, the radiation bouncing off it is pushed closer together, slightly raising its frequency. A contracting lung lowers the frequency. The variation is tiny: just one hertz in a billion.
Bell Labs now plans to modify the mobile phone with a circuit that detects the Doppler shift in the reflected signal picked up by its antenna. The phone then sends this information on to the base station, where further signal processing extracts the user's vital signs. "We're talking about very low-frequency signals. They're easy to separate from a voice," said Dr Lubecke.
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Originally posted by Redge777
I still don't get it, is it reading moving objects by seing shadows moving in and out, blocking transmission?
Like a hand moving in front of your face blocks the light of the monitor screen?
Originally posted by Badge01
Obviously it's no good if it's your workplace tracking you, but for people that are feeling watched in general it might be one solution.