If you ever lose your primary phone, or can't use your authenticator app, you can send a security code to your backup phone number instead. How to add a backup method for two-step verificationĪfter enabling two-step verification, consider adding a backup phone that can receive text messages as well.
You'll be prompted to enter your password to continue. Click the avatar at the top of any page. How to change your two-step verification phone number Note: If you use a Unix or Linux shell, you can safely generate a security code from your computer from the command line using the OATH tool. Once the authenticator app is configured, enter the security code it generates to verify setup and enable two-step verification. Use the steps in your app to add a new account using a secret key. Manually enter your secret key: You'll be given a secret key on that you can type into the app. You may then be able to use your phone's camera to scan the barcode on. 
Scan the barcode (if your app supports it): Open your app of choice and choose to add a new account. Select Use a mobile app during two-step verification setup. If you use an authenticator app to receive your verification codes, please add primary and secondary backup phone numbers. Any app that supports the Time-based One-Time Password (TOTP) protocol should work, including: Most authenticator apps can generate security codes even when cellular/data service is not available, which can be useful when traveling or where coverage is unreliable. The authenticator app you choose will need to generate a unique time-sensitive security code. If you choose to receive your security codes through an authenticator app, you’ll first need to download one. You’ll receive a security code via text message. Enter the phone number where you'd like to receive text messages. Select Use text messages during two-step verification setup. A text message containing a security code will be sent to your phone each time you sign in to Dropbox. If you choose to receive your security codes by text message, you need a phone capable of receiving text messages (carrier rates may apply). Choose if you want to receive your security code by text message or mobile app. 
This means you might not be able to use two-step verification with Dropbox. If you see Managed by single sign-on under the Security tab, your team uses single sign-on (SSO).
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