Amazon is rolling out pay-by-palm technology at some Whole Foods grocery stores near its headquarters to make paying quicker and more convenient. The technology, called Amazon One, lets shoppers scan the palm of their hand and connect it to a credit card or Amazon account. Related video: The Target App Tracks You So It Can Change Its Prices Based on Your LocationAfter the initial set up, which Amazon says takes less than a minute, shoppers can scan their hand at the register to pay for groceries without having to open their wallets. Amazon first launched the technology late last year and at the time said the technology could be used at stadiums, office buildings and other retailers.