Walmart is the latest retailer to support in-store payments from mobile wallet service MobiKwik in 20 of its Best Price Modern Wholesale stores in India, following WHSmith and India’s largest retailer Big Bazaar. MobiKwik “will allow instant one-tap payments for transactions placed through the Best Price mobile app and … via the MobiKwik wallet on the Walmart Best Price website and in physical stores,” it says.