The Tate Britain National Gallery in London, UK, is currently hosting the largest retrospective to date of British contemporary art master David Hockney (until May 29).
Hockney, who turns 80 this July, is one of the defining figures of 20th-century modern art. He has enthusiastically embraced new techniques like photography and photocopiers, and since 2010 has been creating digital works using an iPad.
PosterScope and Ocean Outdoor launched a campaign to announce the exhibition, creating an animated clip showing the process of Hockney's work being completed on an iPad. This clip was displayed on OOH screens in seven UK cities, marking the first such initiative for digital OOH.
The work featured on OOH was Hockney's 2010 iPad painting of his Los Angeles garden, titled "Untitled, No. 382."
Over the seven days starting February 9, the opening day of the exhibition, 20 million people witnessed Hockney's brushstrokes creating his unique painting style on giant OOH screens in cities including London, Manchester, and Birmingham.