I've been dismayed at the recent flap about privacy of your contact information (address book), and the apps that upload it to their servers without asking. Particularly, I was annoyed at industry media coverage which perpetuates a false dichotomy of privacy vs social functionality.

I can understand that journalists won't have any clue what hashing is, but I was disturbed at how many developers hadn't even heard of it either. It was definitely covered in my CS degree at the University of Glasgow!

I decided to write a suitable-for-all, non-technical piece on what hashing is, and how it can be used to (somewhat) address privacy concerns whilst still providing social-media functionality in apps. It's snarky, of course!

http://mattgemmell.com/2012/02/11/hashing-for-privacy-in-social-apps/
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