Abstract: Payment cards and also the systems and methods for securely managing financial transactions using the payment cards are provided. In one implementation, a payment card includes a first component incorporated into a plastic substrate, wherein the first component is configured to provide details of a first substitute account associated with a cardholder's valid credentials. The payment card also includes at least one additional component incorporated into the plastic substrate. Each of the additional components is configured to provide details of at least one additional substitute account associated with the cardholder's valid credentials. Each substitute account includes details that are distinct from the details of each of the other substitute accounts. Also, at least one of the substitute accounts is provided to a merchant for conducting a financial transaction with the merchant.

Abstract: Payment devices and the systems and methods for securely managing financial transactions using the payment devices are provided. In one implementation, a portable proxy device comprises a memory configured to store a plurality of credentials. Each of the plurality of credentials pertains to one of a financial credential, an identification credential, or contractual credential. The portable proxy device also includes at least one interface, wherein each of the at least one interface is configured to communicate one of the plurality of credentials to an external device to complete one of a financial function, identification function, or contractual function.

Abstract: Payment devices and the systems and methods for securely managing financial transactions using the payment devices are provided. In one implementation, a portable proxy device comprises a memory configured to store a plurality of credentials. Each of the plurality of credentials pertains to one of a financial credential, an identification credential, or contractual credential. The portable proxy device also includes at least one interface, wherein each of the at least one interface is configured to communicate one of the plurality of credentials to an external device to complete one of a financial function, identification function, or contractual function.

Abstract: Payment devices and the systems and methods for securely managing financial transactions using the payment devices are provided. In one implementation, a portable proxy device comprises a memory configured to store a plurality of credentials. Each of the plurality of credentials pertains to one of a financial credential, an identification credential, or contractual credential. The portable proxy device also includes at least one interface, wherein each of the at least one interface is configured to communicate one of the plurality of credentials to an external device to complete one of a financial function, identification function, or contractual function.

Abstract: Payment cards and also the systems and methods for securely managing financial transactions using the payment cards are provided. In one implementation, a payment card includes a first component incorporated into a plastic substrate, wherein the first component is configured to provide details of a first substitute account associated with a cardholder's valid credentials. The payment card also includes at least one additional component incorporated into the plastic substrate. Each of the additional components is configured to provide details of at least one additional substitute account associated with the cardholder's valid credentials. Each substitute account includes details that are distinct from the details of each of the other substitute accounts.