You will have added your first card during the sign up process. To add another one, tap the '+' in the home screen.
The '+' is in the top right hand corner.
Scroll right along the carousel or go to the grid view (tap the right hand corner).
On either device, you can take a photo of your card or enter the details manually.
You can add any Visa or MasterCard credit or debit card.
We aren't supporting prepaid cards as standard, however we may support certain prepaid cards, after having performed a risk review on each card, on a case-by-case basis. We do support the following: