Bluetagging - friend or foe?
I'll highlight this interesting point from a recent Flickr uploader review article by Chris Heathcote.
To put it in another way: if you have your Bluetooth on, and someone snaps a picture with a camera phone near by, you might get "caught on the image", even if you don't appear in the picture at all. This is because every Bluetooth device has an unique identifier, and it announces it to about a 10-20 m radius, and this ID can be captured in the image, thus giving the viewer of the image information about who was present at the time.
A Bluetooth ID consists of 12 digits (like 01:02:03:04:05:06), so it's difficult to say who it is. But you can also ask for the Bluetooth friendly name (like "Janne's phone"), and one does need to be a datamining guru to figure out your BT address, if there is enough data available. To paint a nasty scenario: your jealous boyfriend checks out your BT address, and then goes online to find out where you have been moving lately to check up on you. This may become even more problematic, if any of the pictures is tagged with GPS data.
Now, here's the interesting question: does collecting the Bluetooth IDs which are present constitute collecting an person registry - and do you commit a violation of the Finnish law by posting an image with Bluetooth IDs onto a public website?
And regardless of whether it is illegal or not, should it be controlled, and how on Earth could you possibly control it, even if you wanted to? Perhaps the transparent society will happen completely accidentally and spontaneously, brought on us by teenagers who just want to have a bit of fun?
And, if private citizens are allowed to breach everyone's privacy and in the process collect huge databases on foreign soil, then would it not be hypocritical to say that governments and corporations can't do it too? What is the real difference between surveillance and sousveillance, in the end?
Anyway, if you're worried about your privacy, you might want to consider turning your Bluetooth to "non-discoverable mode", i.e. turn off the visibility to all devices... (Finnish Nokia S60 phones: Bluetooth->"Puhelimen näkyvyys" -> "Piilotettu").
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|"Main_blogentry_210406_1" last changed on 21-Apr-2006 18:10:44 EEST by JanneJalkanen.|