A talk about Web SSO from the authors of SPRESSO is available from 33C3 [0] talking about OATH, OpenID Connect, Mozilla Persona and their solution(SPRESSO) for secure, private formally proofed SSO.
It provides single sign on(SSO) in a decentralized, private manner. For instance you see 'login with facebook/google' buttons all over the web, but that gives FB/Google all sorts of fabulous information about you, and has zero privacy. With Spresso, you can offer the same sort of thing, an identity you can share across many different websites(provided they support spresso), without sharing any information anywhere.
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[ 404 ms ] story [ 330 ms ] thread[0] http://ftp.halifax.rwth-aachen.de/ccc/congress/2016/webm-hd/...