Businesses are competing to provide state-of-the-art customer service in an effort to stem the tide of dwindling clientele. For a long time, the checkout has been a source of frustration for both shoppers and retailers. UC Berkley found that customers are less likely to return after waiting in line for more than seven minutes. This information helps shed light on why many retailers, including Macy’s, have adopted self-checkout. Walmart mobile app is assisting the retailer in enhancing yet another facet of customer service: the amount of time and energy necessary to discover certain items. Last but not least, a fantastic…