Each device you use with GoodSync produces a DeviceID used to enroll that device into your list of Approved Devices. The device's activity is logged and presented to the user, allowing you to be sure of the devices accessing your account.
To add a layer of security, you have an option of authenticating using the Google Authenticator app or sending a One Time Password via email or text SMS to confirm enrolling a device into your list of Approved Devices.
NOTE: After adjusting the two-factor authentication settings for your GoodSync Account, remember to re-login on all devices where you use that account. You can do this by accessing "Tools" >> "GoodSync Account Setup" on Windows or "GoodSync" >> "GoodSync Account Setup" on Mac.
Google Authenticator
1) Go to the GoodSync Account Login page and log in to your GoodSync Account.
2) Once logged in, you can find yourself on the "Account" page. In your account information, you will see a field titled "Authenticator Key." To the right of this field, click the link labeled "Set.
3) Using the Google Authenticator app, scan the QR code to add your GoodSync account. Once you finished adding your GoodSync account to the Authenticator app, click the "Back to Account Info" link.
4) In your account information, you will see a field titled "Strong Auth Type." To the right of this field, click the link labeled "Change."
5) Next to the "Strong Auth Type" field, you will see three options. Select the "One Time Password (OTP) by Authenticator" option. Then, click the "Update" button.
6) You will then be presented with a confirmation screen. Click the "Back to Account Info" link to return to your account.
One Time Password (OTP)
1) Go to the GoodSync Account Login page and log in to your GoodSync Account.
2) Once logged in, you can find yourself on the "Account" page. In your account information, you will see a field titled "Strong Auth Type." To the right of this field, click the link labeled "Change."
3) Next to the "Strong Auth Type" field, you will see three options. Select either "One Time Password (OTP) by Email" or "One Time Password (OTP) by Text SMS" to enable One Time Password. Then, click the "Update" button.
4) Once the One Time Password has been enabled, GoodSync will present you with a confirmation screen. Click the "Back to Account Info" link to return to your account information.
From now on, whenever you access GoodSync from a new device, you will be prompted to enter the OTP that will be emailed or texted to you.