ZD Net reports that Walmart “is testing the use of aisle-roaming robots as a way to improve out-of-stock issues and price discrepancies in its stores.”

According to the story, “The nondescript robots include a base with an attached tower equipped with cameras that scan aisles for any of the above mentioned inconsistencies. When problems are found, the robots alert store employees, who then restock the shelves and fix errors. Walmart says it's been testing the robots in a small number of stores in Arkansas, Pennsylvania and California, and that it's now expanding the trial to an additional 50 locations. The retailer was quick to stress that the robots are not a blanket replacement for its human workforce.”