What is a key element of Container Security to maintain chain of custody?

• A. Seals and tamper-evident features.
• B. Cargo stacking height limitations.
• C. Color coding of containers.
• D. Automated loading without checks.

Answer: (A)

Seals and tamper-evident features are central to maintaining chain of custody in container security because they provide a clear, physical indicator of whether the container has been opened or tampered with during transit. Each seal carries a unique identifier that is recorded when the container is sealed at origin and then verified at each handover point. If a seal is broken, missing, or does not match the recorded identifier, there is documented evidence of potential tampering, prompting investigation and an auditable trail. This creates accountability for everyone involved and ensures traceability from origin to final destination, which is the essence of preserving the chain of custody.

Other options don’t address tamper evidence in the same way. Cargo stacking height limits relate to safety and handling efficiency, color coding assists organization but not security or tamper detection, and automated loading without checks could erode accountability because it removes the verification steps that confirm container integrity.