Subverting Westminster Council's Pay by Phone parking to introduce a new system of protest. All that is needed is a mobile phone and a voice: call the protest hotline, leave a protest and the SBP system will make it available online (microsite). Part of BlackBook Activists.
An SMS-only version of the Say By Phone system was made for the Enter 08 exhibition @ Watermans Art Centre in November 2008. Images are available on Flickr.