I love seeing advertising agencies get creative with digital technology–like McDonald’s brilliant, interactive ad campaign in Sweden or Solve Media’s smart CAPTCHA ad technology. And… then there’s Catvertising in Canada.

To promote the new Audi magazine app that launched in Brazil, BBDO Brazil created a new Audi iPad advertisement where you unlock the ad by “sliding to unlock” around a driving track. So, rather than simply dragging to the right, users have to drag the button round an Audi racetrack.

Check it out here: