CMV stands for "Cardholder Verification Method". With the new implementation of EMV practices, there are now 4 different CMVs:
- Online PIN, where the PIN is encrypted and verified online by the card issuer
- Offline PIN, where the PIN is verified offline by the EMV card
- Signature Verification, where the cardholder signature on the receipt is compared to the signature on the back of the card.
- No CMV, where none is used (typically for low value transactions or for transactions at unattended POS stations