Selecting the right smart electronic seal is critical to the success of a Customs Electronic Cargo Tracking System (ECTS). Unlike conventional GPS trackers, smart electronic seals can combine cargo security, GPS/GNSS positioning, tamper detection, event monitoring, authorization and digital evidence to support customs transit supervision. This guide explains the key technical, security and operational requirements customs authorities should evaluate, including physical durability, connectivity, battery performance, geofencing, cybersecurity, offline records, platform integration, device lifecycle management and national-scale scalability. It also provides a practical evaluation framework and explains why electronic seal selection should be based on the overall customs supervision mission rather than hardware specifications alone.
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