Walmart Is Rolling Out the Robots

Walmart Inc. is expanding its use of robots in stores to help monitor inventory, clean floors and unload trucks, part of the retail giant's efforts to control labor costs as it spends more to raise wages and offer new services like online grocery delivery. The country's largest private employer said at least 300 stores this year will add machines that scan shelves for out-of-stock products. Autonomous floor scrubbers will be deployed in 1,500 stores to help speed up cleaning, after a test in hundreds of stores last year....