campaignlive.co.uk, Thursday, 11 October 2012 08:00AM
Diary thinks CBS Outdoor has come up with a rather nice way of doing just that with its "Look for Longer" ads. Two weeks ago, ads with an array of cryptic images started appearing on CBS Outdoor sites on the London Underground. It turns out the ads are from CBS Outdoor itself and each of the images stands for one of the 75 Tube stops. There are prizes up for grabs for people who are able to decode the images and, judging by the hashtag #lookforlonger on Twitter, London's awash with skiving workers trying to figure them out.
This article was first published on campaignlive.co.uk