The mPIN is a 5-digit code you can use to quickly log into your mobile banking app.
When downloading the Suits Me app, you will be asked if you want to set up ‘Quick Access’ using an ‘mPIN’ (mobile Personal Identification Number). Using it gives quicker than using a username and password.
It is completely separate to the PIN attributed to your debit card.
You can also use your thumbprint as well if your mobile device supports biometric security features.