Scheme Tokens (also Network Tokens) are based on a standardized technical framework of the international EMVCo association. Members are the card companies Visa, Mastercard, American Express, Discover, China Union Pay, and JCB. Each card company operates its own Scheme Token system. Scheme Token technology makes it possible to process online card payments across the entire payment flow up to the card-issuing bank (issuer) using tokens (see diagram). This means no card details (e.g., card number, expiration date, etc.) must be transmitted during payment.
Together with other technical features, the use of Scheme Tokens guarantees maximum protection against fraud and, at the same time, increases user convenience for returning buyers who have a customer account where they store a credit or debit card for future payments. Further information can be found under the following links: Tokenization of payment data in general The Scheme token concept