Walmart reveals why it has robots roaming the aisles in 50 of its stores

Walmart Walmarthasexpanded its robot program to 50 stores across the country. The autonomous robots go up and down the aisles, scanning for out-of-stock items, incorrect prices, and wrong or missing labels. Walmart'svice presidentof innovation, John Crecelius, says the retailer is "very excited and very motivated" by the way the program has been performing. Walmart's new robot fleet is having an impact on stores. The retailer has expanded its initial test of its shelf-scanning robots to 50 store...