Evernote's two-factor authentication adds an additional layer of security to the login process, requiring you to enter a special code from your phone, in addition to your regular username and password. The goal of this extra step is to combine something you know (your password) with something only you would have access to (your phone). Setting up two-step verification is straightforward.
1. Sign in as you normally do and go to your account page. Go to your Settings.
2. Find your Security Summary tab and click on it. Locate the Two-step Verification, click Enable.
3. You will be reminded that whenever you sign in to any Evernote application you’ll need to enter both your password and also a verification code. This verification code will be sent to your mobile device via text message. Only the most recent versions of Evernote applications support two-step verification. Before continuing, check for updates and run any Evernote applications that are installed on your devices.
4. You will be asked for an email verification, click Send Email Verification.
5. Check your email, and enter the verification code in the field provided. Click Continue.
6. Next you will be asked for a mobile phone confirmation. Enter your mobile phone number in the field provided. Click Continue. You will be sent a text message containing a verification code whenever you sign-in to Evernote.
7. Enter verification code sent via text to your phone into the field provided and click Continue. (If prompted, you must enter your password to continue, then click Verify.)
8. You will be presented the option to download the Google Authenticator App if you have not already done so. The app will generate a password. Use this password or scan the QR code to finalize your two-step verification.
One very important thing to note. As part of the setup process, you will be given a set of one-time codes to use in the event that you are unable to access your phone. Don’t keep these codes in Evernote since you’ll need them when you don’t have access to your Evernote account.
For more information visit: http://blog.evernote.com/blog/2013/10/04/two-step-verification-available-to-all-users/
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