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Wal-Mart expands test of mobile checkout program

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NEW YORK (AP) — Wal-Mart Stores Inc. is expanding a test of a new checkout program that allows shoppers to scan items with their smartphones while they're in the aisles and then pay at self-checkout terminals. The world's largest retailer launched what it calls its "Scan & Go" program late last year in about 70 stores in Atlanta and in the Bentonville, Ark., area, where the retailer is...