Container QRs serve customs docs in the local language at every port. Diverted to a new terminal mid-voyage? Update once — the sticker stays.
Mid-voyage rerouting updates the customs documents at the QR layer — the container itself doesn't need a new label. Inspectors in Rotterdam read Dutch; in Piraeus, Greek. Scan webhooks supplement battery-dead GPS trackers with port-by-port confirmations.
Free tier includes 1 permanent QR and the recovery key — upgrade the slot with the exact modules this case uses whenever you need them.