A payment device ( a single Payment Device can be linked to one or more

accounts can represent any external identifier for an account: payment card,

account number, email address, phone number, physical payment device, a wallet

identifier and more to enable account routing use cases such as

Allowing customers to select the account to charge using a single card.

Automated routing to multiple accounts with a single Payment Device.

Having one account with an unlimited number of supplementary cards Where multiple devices

are linked to one account, these links can share the same token and be set in/active to select the account to use, or, separate tokens can be used and