Mellow shows the full card number only when you are adding it on the special secure page. Nobody else but you can add a card this way.
N.B. After a card is linked, neither you nor we can see all of its digits – the middle of the card number is masked.
Mellow does this to comply with PCI DSS (https://ru.wikipedia.org/wiki/PCI_DSS) and in line with Verified by Visa(https://www.visa.com.my/pay-with-visa/featured-technologies/verified-by-visa.html) and Mastercard SecureCode(https://www.mastercard.by/content/mastercardcom/kz/ru/consumers/get-support/securecode.html) standards.
Card validation
We do primary validation of your card number when you link the card on the secure page. Primary validation means you are linking a card that theoretically exists. We then fully validate your card and verify its details when you send the first payment to the bank.
If you have any questions, get in touch via the chat or email us at [email protected]. We’re always there to help!