It's a Jungle Out There: Fantasy and Reality of Evaluating Public Displays "in the Wild"
Timo Ojala, Vassilis Kostakos, Hannu Kukka · 2011
We present a summary of our experiences with a longitudinal deployment of interactive public displ ays in a city center. We argue that such deployments offer external validity and highlight a number of issues overlooked by lab studies. We also point out that t hese benefits come with substantial cost and difficultie s.