Cash has attributes that people value. It’s tangible — with cash in hand, consumers know exactly how much they have to spend and what they can’t spend. Money is, for many consumers, the ultimate form of budgeting. Ignacio Caride, Walmart’s senior vice president for eCommerce, Payments and Financial Services in Mexico and Central America, told PYMNTS’ Karen Webster that marrying cash to digital apps can create new commerce ecosystems — with the retail giant’s physical stores at the center of it all.