The document discusses a Smart ULD solution that uses mobile apps, IoT, and blockchain technology to digitize the ULD handling process, provide real-time visibility of ULD location and conditions, and create a single source of truth for supply chain stakeholders. Key aspects of the solution include a mobile app for digitizing ground activities and documentation, sensors on ULDs for tracking location and monitoring conditions, and a blockchain network for sharing events and automating processes across the supply chain. The solution aims to address challenges of manual paperwork, poor tracking and collaboration in air cargo by transforming it through new technologies.