Do contactless bank cards (HSBC in particular) need use with the PIN at regular intervals otherwise the contactless function stops working? I've had two cards which appear to have stopped working, I haven't used with PIN for a long time.
It'll explicitly ask you to do Chip+Pin to reactivate contactless. If you're using it somewhere that doesn't do Pin (e.g. tube ticket gate) it usually keeps working.
Do contactless bank cards (HSBC in particular) need use with the PIN at regular intervals otherwise the contactless function stops working? I've had two cards which appear to have stopped working, I haven't used with PIN for a long time.