| http://www.w3.org/ns/prov#value | - by hesaigo999ca (786966) writes: This is an old technology (although easily destroyed by clouds, smoke, hands in the air, and any other intercepting body), but for sos purposes, there have been talks about using this as a default means of comm for boats out at sea in distress , so as not to use too much energy trying to send out an sos, but at the same time, keep it going long enough someone could
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