Re:Cryptography May Not Be Dead, But It Is on Life Support
by greenyoda on Tuesday January 21, 2014 @02:34PM
(#7097675)
"They had a system that looked for phones moving towards each other, turned off and then turned on when they are turning away from each other. Looking for secret meetings."
And that probably wouldn't require a lot of computation either, since very few people would turn their phones off while going somewhere and then turn them on again. So the people who are doing this are smart enough to know that they can be tracked by their cell phones, but not smart enough to know that turning them off and on again calls a lot of attention to themselves.
So if you're going to a secret meeting that you don't want the NSA to know about, leave your phone at home.
And that probably wouldn't require a lot of computation either, since very few people would turn their phones off while going somewhere and then turn them on again. So the people who are doing this are smart enough to know that they can be tracked by their cell phones, but not smart enough to know that turning them off and on again calls a lot of attention to themselves.
So if you're going to a secret meeting that you don't want the NSA to know about, leave your phone at home.