blockchain based shipment tracking system for US customs ?

non monetary uses for blockchain have been explored for some time, chief among them is for tracking of shipments, US customs is testing a new blockchain based system by start ups factom, the test are about six months old and results will determine if the system gets to wide deployment

https://cointelegraph.com/news/us-customs-and-border-protection-to-test-blockchain-shipment-tracking-system