Two-Factor Authentication is a very secure way to protect your online accounts. It works by requiring you to identify yourself using two different things when you log-in to a site. The second factor is tied to something 'you have' (like a cellphone). So you can think of two-factor as something you know (your password) + something you have (your cellphone).
Regularly you use a username and a password to log-in. With Two-Factor Authentication you would use a username, a password and a token. The token is a unique number that your cellphone generates and is constanty changing. Because only your cellphone can generate that number and only you own the cellphone, even if someone was able to guess or steal your password if you enable two-factor authentication they wouldn't be able to hack your account without stealing your cellphone too.
Authy makes it really easy to use Two-Factor Authentication on your online accounts using your smartphone. We provide you an App that makes it easy for you to keep all your tokens and "just" works for a strong authentication. Our goal is to make it easy and straightforward for anyone to use Two-Factor authentication on all of your accounts.
Adding Authy Tokens is very easy. Just enter your cellphone number and follow the steps below:
Enter your cellphone number here.
If you don't have an account, we'll ask for your e-mail to create one.
Lastly, for security we'll use your number to send you a registration pin. You can get one via SMS or Phone Call.
Authy tokens are automatically synchronized. Just open the app and they will be downloaded automatically.
Add to Google Authenticator Accounts is very easy:
You can also add tokens from Websites that support Google Authenticator such as GMail, Dropbox, Lastpass and Amazon Web Services. Each of this websites has a different way to enable Two-Factor Authentication, but you can usually find the enable page on your user settings page. If you are unsure, contact their support staff. Once you enable two-factor on the website, they will present you with a QRCode image. Use the Authy App to scan that QRCode and you are set.
Open Gmail and go to your account settings.
Then go to security. On 2-Step verification click "Settings".
Click "Start Setup".
You'll get a text-message on your cellphone with a code. Enter the code.
Click "Do this later."
Next to "Mobile application" select Android or iPhone.
Gmail will show you a QRCode.
Open the Authy App and on the sidebar click the "+ Authenticator Account". Click "Scan QR Code" and use your camera to scan it.
Enter the "Token" that you see in the screen on "Code:", then click "Verify and Save". You're done.
In Dropbox go into to your accounts "Settings" go to "Security". Click "Enable" Two-step verification.
Click "Get Started".
Enter your dropbox password and click "Next".
Select "Use a mobile app".
You'll see a QRCode.
Open the Authy App and click "+ Authenticator Account". Click Scan QRCode and scan the QRCode.
Enter the token shown on the Authy App for Dropbox and click "Next".
Enter your cellphone number as a backup.
Write down and store the number securely, then click "Enable two-step verification".
Open your Facebook and go to "Account Settings".
On "Security Settings", in "Login Approvals" click "Edit".
Click "Get Started".
Enter a name and click "Add Browser".
Select "Android, iPhone or iPod Touch".
Enter your Cellphone number.
Wait for the verification code to arrive an enter it.
Now click "Setup Code Generator".
Click "Having Trouble?" link.
Click "Get Key".
Facebook will show you a 16 digits keys.
Open the Authy App and click "+ Authenticator App". Click "Enter key manually".
Enter the you see on the screen and click continue.