Digital interactions are expected to influence 64 cents of every dollar spent in retail stores by the end of 2015, or $2.2 trillion, according to Deloitte Digital's latest study, "Navigating the New Digital Divide." The figure compares to digital interactions accounting for only 14 cents of each dollar spent in brick-and-mortar stores in 2012, the first year Deloitte conducted the annual study, and 36 cents as reported last April. Last year's jump was attributed to more customers using digital devices before and during their shopping journeys. The latest jump to 64 cents represents not on...