What happened Shares of radio frequency identification (RFID) solutions provider Impinj (NASDAQ: PI) jumped on Friday in reaction to the news that Amazon was acquiring Whole Foods Market. Amazon is a member of the RAIN Alliance, a body that promotes RF tagging. Impinj stock was up about 17% at 3 p.m. EDT. So what Impinj sells RFID chips that are used to track objects. These chips are already used in a variety of industries, including retail. With Amazon making its first big leap into brick-and-mortar retail with the acquisition of Whole Foods, speculation that the e-commerce giant will use RFID technology to make its stores more efficient is driving up Impinj stock. Image source: Impinj. A RAIN Alliance meeting, co-hosted by Impinj and Amazon, is set for late July, and investors may learn more about Amazon's ambitions at that time. Impinj could also be an acquisition target for Amazon if it ends up implementing RFID technology broadly. Now what RFID technology could eventually lead to Whole Foods locations with no checkouts, similar to the Amazon Go grocery store concept. Amazon's intentions with the upscale grocery chain are at this point unclear, but it's not too far-fetched to believe that the company is headed in that direction. That could be a boon for Impinj, but it's all speculation at the moment. 10 stocks we like better than ImpinjWhen investing geniuses David and Tom Gardner have a stock tip, it can pay to listen. After all, the newsletter they have run for over a decade, Motley Fool Stock Advisor, has tripled the market.* David and Tom just revealed what they believe are the 10 best stocks for investors to buy right now... and Impinj wasn't one of them! That's right -- they think these 10 stocks are even better buys. Click here to learn about these picks! *Stock Advisor returns as of June 5, 2017John Mackey, CEO of Whole Foods Market, is a member of The Motley Fool's board of directors. Timothy Green has no position in any stocks mentioned. The Motley Fool owns shares of and recommends Amazon and Whole Foods Market. The Motley Fool recommends Impinj. The Motley Fool has a disclosure policy.