Sms Guerrilla projector is a rather homemade-looking projector. But with its integrated mobile phone, this battery-run device can receive and project text messages in public spaces (in streets, shops, on building facades...).

Its inventors, Conny Freyer, Eva Rucki and Sebastien Noel, who have been working in London under the name of Troika since 2003, have conceived it as a kind of urban guerrilla instrument, a provocation that invites free expression or to share thoughts and reflections with others. Elena Sommariva

www.troika.uk.com