How will it work if you pay by PayPal or similar? Or are the ToCs still too old-fashioned to recognise these methods?
But really it's not to do with the ToCs or even Red spotted hanky etc. It's being promoted by the
UK▸ Cards Association. Why? Clearly, more opportunities to charge for handling with cards than cash (yes, I know businesses get charged for cash handling, but cards provide the possibility of charging the purchaser too) and, perhaps more importantly, more tracking.
Oh, and what about paying in Bitcoin?
Paying with a contactless card would make the need to use Paypal etc redundant, surely that's one of the advantages?