Mobile payments have officially launched, and retailers have mostly Apple Pay to thank. But some retailers—​notably those involved in the group developing CurrentC, which has yet to be launched but has already suffered a hack—have at least toyed with not accepting Apple Pay.

But that would probably be a mistake. The inward focus of CurrentC’s development could easily be the basis of its downfall. Apple Pay, Google Wallet, and others, for that matter, use NFC systems that many retailers already have in place. (Remember, those eschewing Apple Pay, in fact, said they were disabling their NFC technology.) It stands to reason, especially with Apple Pay getting good reviews from users so far, that retailers with NFC should want to accommodate the customers who want to buy things with Apple Pay or Google Wallet. Yet right now, many can't (or won't).

Ultimately, refusing to take Apple Pay and other NFC-enabled mobile payments is likely to do retailers more harm than good.