Metrics are commonly used to assess effectiveness. Impressions, screen uptime, and content schedules support system monitoring. In practice, human response shapes outcomes. A screen can be active, still be ignored. Understanding this gap supports better planning. when content fits attention patterns. Limits of data-driven evaluation Logs confirm delivery. It supports https://andrewworknotes.answerblogs.com/40046409/how-digital-signage-systems-are-structured