The document summarizes research on how shoppers use mobile devices in stores. It finds that 84% of smartphone owners use their devices to help with in-store shopping. Mobile influences purchasing by allowing price comparisons and information searches, and frequent mobile users spend 25% more. Shoppers rely on search engines for product information instead of asking employees. Mobile use cuts across all categories and empowers shoppers with convenience and savings. The implications are that mobile marketing is essential, mobile can drive customers to and within stores, and businesses must address showrooming.