I’ve just used by Debit Card for the first time to pay for a coffee. I paid using contactless, and I just caught a message on the contactless terminal after it approved saying something like “£100.61 available”.
I don’t remember ever seeing something similar with the prepaid card. The amount is quoted as available doesn’t tie-up with by account balance, or the price of the coffee.
Sounds odd, I’ve use that terminal twice a day 4 days a week for 12 months, and I’ve never seen it with any other cards. It must be something unique to the debit card.
SWR once told me I had £14million before the machine crashed. Also a contactless transaction with a special thread here: SWR Contactless at Ticket Machines