Dive Brief: Amazon announced on Wednesday that it is expanding Amazon One, which lets users pay with their palm prints, to Whole Foods Market stores. The payment technology is now available at Whole Foods' Madison Broadway location in Seattle and will expand to seven other area locations in the coming months, Dilip Kumar, Amazon’s vice president of physical retail and technology, wrote in a blog post. Launched in September at two Amazon Go stores in Seattle, the bio-authentication tool uses computer vision technology to identify consumers based on the unique characteristics of their palms. The announcement resolves speculation around when the e-commerce company would add cutting-edge checkout technology to Whole Foods.