How to protect your Amazon account with two-factor authentication | PCWorld

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"It’s not clear when it happened, but Amazon recently added two-factor authentication as an login option for your Amazon account. This is a key security measure that's long overdue on a site that handles your credit card information.

For several years, we’ve encouraged you to add two-factor authentication to your accounts whenever possible, and Amazon is no different. When the new security option is active, signing in is a two-step process. First, you sign-in with your password as usual, then you’ll be required to enter a short code generated by a smartphone authenticator app or received in a text message."

How to protect your Amazon account with two-factor authentication | PCWorld