In 2012, NEC and some of their partners conducted some research to the ever-evolving digital signage industry. The focus of their study was Return on Investment (ROI) which is a common measuring stick for many capital investments. Although the findings have collected dust over the last few years I would venture to guess that, if anything, individuals and companies are realizing thei... https://blog.origindisplays.com/how-to-measure-roi-for-digital-signage/