New Delhi, May 3 -- Shoppers at one of Walmart's Philadelphia locations will no longer be able to scan their own groceries after the retailer removed self-checkout lanes and returned to traditional cashier-led service, marking the latest reversal in the retail industry's once-aggressive push toward automation.

The move affects Walmart's South Philadelphia store and comes as the company prepares a broader overhaul of hundreds of stores across the United States, including dozens in Pennsylvania.

According to local reports, the South Philadelphia location is now the only one among the city's five Walmart stores to fully switch away from self-checkout.

The retailer said the decision followed an internal review of customer shopping habits a...