Wal-Mart is testing drones inside its distribution and fulfillment centers, believing the technology could be rolled out in six to nine months as a way to check inventory more efficiently to keep up with customer demands, according to Arkansas Online.

The retailer provided a peek of its use of the technology during a media tour of its Bentonville, Ark., distribution center Thursday. The drone is fully automated, but was manually controlled during the demonstration as it flew up and down warehouse shelves, captured images and determined whether products were in the right place in the distribution center.

Checking inventory is done by workers who have to use lifts and are harnessed in for safety as they scan products throughout the warehouse. The switch to drones could cut the time it takes to check the inventory throughout a facility that spans roughly 1.2 million square feet, or the equivalent of 26 football fields, from one month to one day.

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