Metrics are commonly used to assess effectiveness. Operational statistics support system monitoring. However, behaviour often matters more than raw data. A display can be operational, yet still fail to communicate. Observing real-world behaviour helps explain why some deployments succeed. Digital signage works best when it aligns with how people behave. https://andrewoperationsnotes.59bloggers.com/40026728/notes-on-how-digital-signage-works