Amazon has quietly launched a mobile device app designed to help truck delivery drivers get in and out of warehouses faster, according to a report by CNBC.

The app is called Relay and rolled out late last month. According to CNBC, it is available on Apple and Android devices. Drivers enter cargo information into the app, allowing them to check in with a QR code and get through the security gate, avoiding the manual process of badging in. At some facilities, Amazon has built special Relay lanes, according to the app page.

Relay is Amazon's first attempt at automating the truck delivery process, which the report notes is error-prone due to its reliance on phone calls and paperwork. About 80% of cargo in the U.S. is transported via truck, which makes the market a big target for tech companies like Uber and start-ups such as Convoy and Trucker Path. According to Convoy, the trucking market is worth $800 billion.

While Relay may have a narrow application today, it serves as the first connection point between Amazon and potentially millions of truck drivers. Amazon is reportedly looking into other services as well, including an app that would match truck drivers with cargo shippers.