Archives for posts with tag: context

Today at the IFIP Information Security and Privacy 2014 conference, Nathan Clarke talked about active authentication. The goal of active authentication is to continuously estimate the confidence that the owner of a smart phone is actually using it at this very moment. This is an interesting idea, that I’d like to discuss a little bit in this blog post.
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Basic RFID tags, like EPC Global tags, store a unique number that is broadcast whenever they come within reading range of an arbitrary reader. This poses some privacy threats because if you carry a tag with you all the time, the same serial number will show up at all the readers you pass. Today at the RFIDSec 2010 workshop I learnt that secret handshakes (See Czeskis et. al.) are an active area of research in RFID security. The aim is to provide some context to an RFID tag that will allow the tag to decide whether to talk or not.

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