This case history by Exterion Media – the out of home contractor – is an excellent example of using TouchPoints to enhance a proprietary data base, in this case their London Worker Survey, to create a more granular audience segmentation than would have been possible using only their own survey. The segmentation allowed Exterion to fully identify and evaluate the London Worker audience and then using the fused time of day data to determine the best times to reach and influence their audiences on their paths to purchase.