From the Wall Street Journal:

Maersk Line, a unit of Danish shipping and oil conglomerate A.P. Moller-Maersk , said it would equip 290,000 of its refrigerated containers, known in the industry as reefer boxes, with the AT&T technology. The containers will be equipped with a temperature SIM card, a GPS unit and a radio and antenna that will monitor their condition aboard vessels or on land.

Supply-chain personnel have previously had to check the containers manually for malfunctions. The agreement between Maersk and AT&T is one of the largest industrial Internet of Things deployments of its kind.

Continue reading at the WSJ