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A comment on German tank problem. Parent comment

Re:German tank problem by jrockway on Friday February 21, 2014 @06:17PM (#7280114)
FWIW, I believe the military already deploys mobile computers with HUDs like this.
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Re:German tank problem by jmaygarden on Friday February 21, 2014 @07:33PM (#7280418)
Such a (GPS-based) system I've worked with in the past is called Blue Force Tracking.

http://en.wikipedia.org/wiki/Blue_Force_Tracking

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Re:German tank problem by Someone on Saturday February 22, 2014 @08:33AM (#7282009)
I don't know whether they use HUDs, and whether they work with tanks, but the common name for that is a "friend or foe" system (http://en.wikipedia.org/wiki/Identification_friend_or_foe)
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