Duval Guillaume won a silver OOH Kings of Creativity Award during the Merit Awards Night for “The Open Window Billboards” campaign for the city of Antwerp. A total of 40 campaigns were submitted for the first edition of the OOH Kings of Creativity Awards, that reward campaigns created in the course of 2015. The Open Window Billboards campaign was created to make the Antwerp people aware of the increasing amount of break-ins in autumn. 30% of the break-ins happen when a house is not properly locked. To highlight this problem, a network of unclosed billboards were placed all over Antwerp. Posters also gave civilians easy tips to prevent theft in their homes, reminding the Antwerp people to lock their windows when leaving the house.