Digital signage performance is often discussed in terms of data. Playback logs and system metrics provide useful insight. In real environments, human response shapes outcomes. A screen can be active, still have limited impact. Recognising the difference supports better planning. when content fits attention patterns. Limits of data-driven evaluation Logs https://andrewdailyobservations.shotblogs.com/observations-on-sustainable-digital-signage-practices-53661136