At least 300 stores will have machines to scan for out-of-stock products, and 1,500 stores will have “autonomous floor scrubbers.” The retailer will more than double its automatic scanning and sorting conveyor belts to 1,200, and 900 stores will have online-grocery pickup kiosks. The retailer has been testing the robots for more than two years. The company said the machines are more productive and cost-effective than human labour, though it didn’t specify whether any jobs would be cut as a result of the rollout. Walmart Canada did not immediately reply to The Logic’s questions about whether the changes would affect Canada. (Wall Street Journal)