To promote its adicolor concept, Adidas recently launched a clever interactive billboard campaign.

First step: Adidas put up blank white posters with their logo, encouraging people to write or draw on it.

Second step: After a while, the Adidas crew comes back and cover the billboard with a second poster, which contains wholes in the shape of shoe-canvas. Consequently, when placed on top of the first poster, the underlying graffiti becomes an illustrative part of the second poster.

More images available at Wooster Collective.

• woostercollective.com