Amazon’s cashierless checkout technology could soon be coming to its growing line of Fresh grocery stores. Features of Amazon’s automated checkout technology called “Just Walk Out,” appear in planning documents for a store under construction in a suburban shopping plaza in Brookfield, Connecticut. Amazon declined to comment. Amazon opened its first Fresh grocery store in Los Angeles’ Woodland Hills neighborhood. It has since opened a dozen stores, located in southern California and in several suburbs of Chicago. The company also plans to open a handful of stores on the East Coast. Amazon Fresh stores are roughly 35,000 square feet, or about the size of a store in Amazon’s other grocery chain, Whole Foods. The format incorporates a blend of in-store and online shopping while offering consumers a variety of products at lower price points than the largely upscale options offered at Whole Foods.