Trending: Amazon Go automated retail store handles a crowd on opening morning — and the only line was outside

Americans are spending more time price comparing goods while browsing the aisles at brick-and-mortar retail stores, using their smartphones to gather more information.

Now, is offering $5 to shoppers if — in the words of reporter Tricia Duryee at All Things D — they “walk out of stores empty-handed.” plans to run the promotion on Saturday, December 10th — a big shopping day at physical retailers. As part of the deal, shoppers can earn up to $15 for doing three price checks with Amazon’s bar-scanning iPhone or Android app.

“With every in-store price you share, you help ensure our prices remain competitive for our customers,” wrote in a note announcing the new promotion.

Mobile shopping and price gathering is on the rise, and just last month Seattle startup rolled out a new iPhone app that tells shoppers whether they should buy or wait on a purchase of electronics gadgets. In their press materials, noted that about 70 percent of smartphone users are now consulting their mobile phones before making a purchase.

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