Amazon filed a patent for technology that could identify you by scanning the wrinkles in the palm of your hand and by using a light to see beneath your skin to your blood vessels. The resulting images could be used to identify you as a shopper at Amazon Go stores. It was previously reported that the Seattle-based tech giant might install these hi-tech scanners in Whole Foods grocery stores. However, the U.S. Patent and Trademark Office published an application on Thursday that suggests the e-commerce behemoth sets its sites on Amazon Go stores. If it’s ever deployed, the move would give the tech giant even more data on users as privacy and security become a major national issue for consumers and government bodies alike.