This post looks at where machine learning actually fits in a payment system: not inside the authorization path that EMV, tokenization, and the networks already own, but in the risk …
A partial approval is not a decline and not a completed sale. ISO 8583 response codes and amount fields must be read together — and the terminal must not show a green APPROVED …
Online vs Offline EMV Transactions: Why Offline Still Matters In EMV payments, “online” and “offline” do not mean secure and insecure. They describe where the transaction decision …
When an issuer or its processor drops offline, the POS does not always get a clean decline. The card scheme may stand in and approve or decline on the issuer’s behalf. The …
Every time you tap your phone at a terminal, add a card to an online merchant, or set up a recurring subscription, the system doesn’t use your actual card number. It uses a …
Old code isn’t the problem. Expired approvals are. Kernel lifecycle is really compliance alignment: whether the Level 2 (L2) kernel on your terminals still sits inside an …
Three words every payment professional uses — and confuses. Each lives at a different point in the settlement lifecycle, under a different protocol, with radically different …
Every card-present transaction begins with a question the terminal must answer before anything else: is this card genuine?
A card payment feels instantaneous. The system behind it is not.
The POS terminal has quietly become critical financial infrastructure — and most architects are still designing it like a payment endpoint.