[extropy-chat] PRIVACY: GPS darts
dgc at cox.net
Wed Apr 21 12:05:48 UTC 2004
Mike Lorrey wrote:
>Look at the photo at the bottom of the page. Diameter of a matchstick.
>Displays 23 and 32 mm long transponders which appear to be about 3mm
>Moore's Law says 1-1.5 mm dia in a year or so. .5-.75mm after that,
>whereupon they will be injectable by gun with minor discomfort for the
>recipient, that is, assuming the PTB don't already have them,
>considering that these are all out on the open market.
Moore's law describes transistor sizes. Radio waves stay the same size.
of the radio wave constrains the size of the antenna. Shorter radio
possible, but GPS does not use than and they do not penetrate materials
The devices you found are RFID transponders. They cannot receive GPS,
cannot operate over more than a few feet. They are unrelated to the fish
you mentioned earlier, which had a range of 100' and a 4cm antenna.
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