Imagine being able to walk into a shop and then pay for your things without ever taking out cash or a card. You may soon be able to accomplish this with MasterCard's new payment system. As reported in CNBC, this newly piloted payment processor would be able to run transactions using data connected to a person's body: "At checkout, users will be able to authenticate their payment by showing their face or the palm of their hand instead of swiping their card.