Now when can't SP's carry a portable card reader around with them?, some use your mobile phone as a data conection terminal they work well.
Card readers are now very simple to use, and are reasonably priced. (Around £30)
I have one which I bought on a deal, so either cost me £10 or nothing.
There is either a subscription rate or a commission rate per payment. Subscriptions come with business banking facilities and are worthwhile for businesses taking regular payments, Im on a commission rate and the rates vary up to typical PayPal rates of 3 or 4 per cent. Mine is lower, and I would get paid the days total tomorrow.
My use will be very rare, so it’s for convience.
When it gets to a time that providers are taking card payment it will still be possible to have reasonably anonymous pre paid cards. (More threads asking how people get money into their card without their wife finding out, and where do you hide your card)
I have a prepaid virtual & real card. The virtual card is free, and the real card for it should cost money but I also got that on a deal - use only the virtual one and then get offered the real card to go with it.
I only use it for some online spending so I can be sure that an obscure website isn’t going to turn out to be a scam and raid my account. The card can have money instantly transferred into it and it has an app that allows enabling and disabling the cards.
I have once given the card to someone else, just loaded up an amount and handed them the card.