On Whaller, you can add a physical verification (security key) to reinforce the authentication of your account.
Step 1
To activate your key, go to the "Password & Security" section in your account settings.

Step 2
Define the name of your key, then insert it into your computer.

Step 3
Once your key has been added, it will be operational.
Going forward, you will need to use this key, plus your password each time you log in to Whaller.
