Earlier this month, Walmart unveiled a new plan to track customers and provide insights and analytics to retailers. It was received, at least online ... charges fees for order fulfillment.

The new service is already available in six states, and gives the supermarket giant a leg up against struggling drugstores ...

Oct. 22 (UPI) --Walmart has begun a pilot program that delivers to people's doors prescription drugs and other items they order and pay for online. The same-day service is available in six states ...