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Uniquely ID people based on their home and work post codes!
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Member since May 2011 · 2485 posts · Location: Brisbane
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Subject: Fascinating analysis of census data
Found this over on Bruce Schneier's blog: Researchers have worked out that knowing only the block where your home and office are, you can be uniquely identified (PDF link). 

That's really interesting, but not surprising: how many people work and live on the same blocks?  What's fascinating to me is the proof of it all.  The research suggests that the block-level data is all that's needed to uniquely identify you, and that your home and work postal (ZIP) code is enough to identify 5% of the population.  That's a seriously coarse sampling but still quite useful.

There's quite a bit of analysis on 33 Bits of Entropy, covering the risk to anonymity when you consider the above research in combination with modern location-based technologies.

Very much an interesting read.
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