Location-based services are already being used for dating services (big
surprise here). Mobiles send their location to a server, the server
figures out who is near whom, and matches them. There are lots of
variants on that. An obvious risk here is that the server is acting as
a location oracle, allowing me to triangulate. Or I can fake my location
to be my mark's, and see if he is "near" there. A senator no longer
even has to have a "wide stance" to be caught cruising :)
/ji
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