Location services risks (was: Re: Spy/Counterspy)

[John Ioannidis]

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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