Of course, much of the new technology has practical and even ethical kinks to work out. The tools give retailers more ways to track users locations and habits, bringing up privacy concerns among consumer advocates. And some consumers are already reporting getting inundated by local retailers offers. (Joel Osman, who heads a mobile technology group for consulting firm Accenture, calls this emerging hassle geo spam.) To help readers filter out that kind of hype, we ve taken a close look at three of the fastest evolving shopping tools.
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