Duval Guillaume and media agency Maxus won a bronze AMMA Award for Best Creative Media Use for “The Open Window Billboards” campaign they developed for the City of Antwerp. 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.