Nominated for Prix Ars Electronica 2012, Polish artist Karina Smigla Bobinski's ADA is a giant interactive analogue installation, a physical coding experience which the artist and audience create together. ADA is a huge membrane-like globe that floats freely in the gallery space. Attached to the membrane are pieces of coal that leave their traces on the walls, ceiling and floors as the ball is pushed around by you, the gallery visitor. Constructed to have her own will, ADA does not follow programmes or commands but is an autonomous artwork enhanced by the people's reaction to her.