US Patent 11315108 Profile generation and association with multiple transaction cards contemporaneously

A payment service generates multiple user profiles, each profile associated with a different user. Each user profile may be linked to multiple transaction cards and multiple numerical balances. Multiple transaction cards can be linked to a same numerical balance—even if the cards are from different user profiles. Restrictions, such as transaction type blacklists and whitelists or parent/guardian permission relationships, can be placed on particular numerical balances, or on access to particular numerical balances by particular cards. Numerical balances and transactions using particular cards may be tracked using user profiles with access to those cards and numerical balances.