“The object which triggered privacy alarms at Walmart is not a camera, not a microphone, and not a scanner. It is a location tracker.” Consumers have been noticing the presence of a small, box-like ...

When dozens of people across the country got sick from eating contaminated romaine lettuce this spring, Walmart did what many grocers would do: It cleared every shred off its shelves, just to be safe.

Walmart Inc.'s new requirement that some suppliers use a blockchain ledger to track food from farm to table is just the latest example of the retailer's leadership in innovation, a supply chain expert ...

Wal-Mart plans to spend $3 billion over the next several years on a new inventory tracking technology that uses radio frequency signals to keep tabs on merchandise, sources familiar with the project ...