I've never been asked for a pin when using NFC payments (if you don't count the times I've used my phone) but I mix my card transactions up all the time between cash width drawls, Chip and Pin payments and NFC so I guess the "ask for a pin counter / algo" gets reset when I use a pin in Chip and Pin / ATM.
I believe that after so many NFC payments (without reseting the count) or try and make a purchase over £30 they ask for a pin and my bank will cover any NFC payments on a lost card as long as you make them aware of the loss within a reasonable time period. So personally I'm not too worried about losing my NFC card. They know its not a perfect system (is anything perfect?) so limit their loss by restricting the amounts used on such cards.
EDIT: Esp as a lost card could be used for online transactions as they have the CVV (as they have the card) and losing your card prob means losing your wallet and prob your driving license with your address on it (almost everything a bad actor needs to make an online purchase, just got to hope that Verified by Visa / Mastercard SecureCode kicks in).
I actually need the PIN for any payment over €25, which can still be done with NFC. Besides that, I'd say I still need to enter my PIN for small payments roughly once every 2 weeks.
I believe the "purchase over £30" in the UK is dependant on the store. Instead of asking I've just use Chip and Pin for such transactions. But yeah never had the "enter your pin" for small NFC payments. Guess the bank thinks I'm a low risk :-p
(Now I've said it I bet the next time I use NFC it will pester me for a pin :-p)
I believe that after so many NFC payments (without reseting the count) or try and make a purchase over £30 they ask for a pin and my bank will cover any NFC payments on a lost card as long as you make them aware of the loss within a reasonable time period. So personally I'm not too worried about losing my NFC card. They know its not a perfect system (is anything perfect?) so limit their loss by restricting the amounts used on such cards.
EDIT: Esp as a lost card could be used for online transactions as they have the CVV (as they have the card) and losing your card prob means losing your wallet and prob your driving license with your address on it (almost everything a bad actor needs to make an online purchase, just got to hope that Verified by Visa / Mastercard SecureCode kicks in).