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Let's get real: Wal-Mart's app-based payment method takes almost no advantage of mobile technologies, and the result is a barely-better experience than using a self-checkout counter by itself—which is terrible. What the app seems to do is let the customer scan and collect the item information, which is then simply transmitted to the self-checkout counter, where you pay as usual with cash or credit card. So instead of scanning your items at the self-checkout counter, you scan them as you pick them off the shelf. I guess that speeds the process. At least it keeps people behind you in line from giving you dirty looks as you fumble with the scanning process. Now you can just fumble around without anyone watching.
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