Electronic sealing for export containers becomes mandatory in a phased manner; RFID e-seals required for eligible exporters. RFID e-seals are required for full container loads sealed at approved premises under the self-sealing procedure; intact RFID-sealed FCLs are treated as equivalent to officer-supervised seals and exempt from routine examination unless intelligence or a tamper read warrants inspection. Tampered seals trigger examination and reversion to traditional customs sealing for further movement. Vendors must supply rugged fixed and handheld readers and a desktop application displaying prescribed data elements and capturing seal read location; exporter-uploaded data must be immutable and initial purchaser IECs sent to risk management.