Privacy has been, and remains a key concern in relation to the use of the net, and particularly Social Media. Every time you log on you leave a trail, and as we increasingly log on with mobile devices, the data we offer to sophisticated users is true Big Brother stuff.

This leaked video showing RIOT  software (Rapid Information Overlay technology) that turned up on the Guardian website is instructive, and scary, although I guess the old “I have nothing to hide” argument still holds.

I bet the crims do not use mobile phones, or at least the smart (and free) ones won’t, although it may not be likely that the police have the budget to do sensible stuff like deploy this sort of technology, too few press release opportunities for their political masters.