PROXY DEVICE FOR REPRESENTING MULTIPLE CREDENTIALS

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. 提供了支付装置以及使用该支付装置安全管理金融交易的系统和方法。在个实施方式中，便携式代理装置包括配置为存储多个证书的存储器。多个证书中的每个属于金融证书、标识证书或合同证书的其中个。便携式代理装置还包括至少个接口，其中该至少个接口的每个配置为将多个证书的其中个发送至外部装置以完成金融功能、标识功能或合同功能的其中个。