Open the SumUp app on the smart device you’ll use for your Business Account.
Select "Business Account" on the home screen.
Tap the settings icon in the top right corner then choose "Security settings".
Activate the Strong Customer Authentication toggle. We’ll text a verification code to your registered phone number.
Enter the verification code and tap "Confirm".
Tap "Resend code" to try again, or check and update your registered phone number.
Additional SCA options
Activate the the "Touch ID for verifications" toggle so you can verify payments with your fingerprint instead of a password to make SCA faster and more secure.