The MasterCard Digital Enablement Service (MDES) is a data interchange platform for generating and managing secure digital payment tokens. It enables devices such as smartphones, smart watches, as well as merchants, to create a tokenised version of a Mastercard, which is specific to that device or merchant. Then the device/merchant can use the tokenised version of the card to perform transactions. The tokenised version of the card appears as just a normal Mastercard card number to the merchant and acquirer, and Mastercard will map the transactions onto the original cardholder Mastercard. For more information, see the Tokenisation Service Guide.