ACCUZ® SiteOn™ is a purpose-built Component Verification System (CVS) designed to track the lifecycle of structural components in the construction industry using NFC technology. The system’s primary innovation is turning a worker’s standard smartphone into a high-precision scanner, eliminating the need for expensive, specialized hardware.Key features of the SiteOn™ mobile app include: Point-of-Installation Verification: By tapping their phone against a component’s embedded NFC tag, workers can verify identity, location, and installation sequence in under two seconds. Five-Layer Rule Engine: The app enforces strict engineering rules, checking for Identity (genuine parts), Location (grid reference), Orientation (node-to-node direction), Sequence (prerequisites), and Tolerance (survey measurements). Full Lifecycle Tracking: It manages components through six mandatory stages: encoding, binding, dispatch, site receiving, pre-installation checks, and final installation verification. Offline Functionality: The Android-based app is designed for “offline-first” operation, ensuring it remains functional on construction sites with poor or no connectivity. Digital Audit Trail: Every scan creates an immutable record with timestamps, GPS coordinates, and user identity, providing complete chain-of-custody documentation for regulatory compliance and quality assurance.By combining zero-hardware-cost deployment with real-time engineering enforcement, SiteOn aims to eliminate the 5–12% of total rework costs typically caused by component misinstallation.