That seems an overly fine line to draw, when a check is basically just a plain piece of paper with your ACH number printed on it, and anyone with your ACH number can go get checks printed. A credit card is also bidirectional, so the question was just if alternatives exist to VISA processing, not if you necessarily would use them. I meant to mention Zelle and Plaid too, since they integrate with many (most?) banks already to allow transfers via your online account login authentication credentials instead of traditional ACH
From a card holder's perspective regarding a transaction being voided or refunded, sure. What I was talking about are services where the account holder can equally perform purchases as well as receive payments.
> I meant to mention Zelle and Plaid too, since they integrate with many (most?) banks already to allow transfers via your online account login authentication credentials instead of traditional ACH
For the purposes of bidirectional fund transfers, the mechanism for how it is implemented is moot. The net effect and account access (intimacy) is functionally the same.
