Sean Pyles writes for NerdWallet. Email: spyles@nerdwallet.com. Twitter: @SeanPyles. Sara Rathner writes for NerdWallet. Email: srathner@nerdwallet.com. Twitter: @sarakrathner. The article Smart Money Podcast: How Secure and Private Are Your Digital Wallet Transactions? Apple Pay, Google Pay, Samsung Pay and More originally appeared on NerdWallet.