Go to your user profile.
Click Add under the Two-step authentication section.
Select Add Google Authenticator. You will be asked to scan the barcode on your screen with your mobile device’s camera.
Confirm the code that is shown on your device to finish the setup.
Write down the backup code shown and store it in a safe place.
The setup process is then complete. Going forward, Stripe will request a code when you sign in.
These codes are specific to that particular device and cannot be transferred. If you are going to switch to a new phone or wipe your phone, you will need to disable two-step authentication before you do so, then re-enable it using your new phone.