The invention relates to an enabling card as well as a system and method for completing a financial transaction in a P.O.S. terminal comprising: a processor carried by the enabling card for: establishing a connection with a mobile device; receiving secure information from a mobile device and generating a digital signal; a coil carried by the enabling card for generating a magnetic field in response to the digital signal to simulate the swipe of card in the P.O.S. terminal and complete the financial transaction.

Methods and systems are provided to receive token context data from a token request, determine parameters of a custom token, and generate and communicate the custom token. Tokens may be generated that are compatible with one or more payment providers from a plurality of possible payment providers. Data related to current and future conditions of the payment providers, merchant preferences, customer preferences, locations of the merchant, customer, and/or the transaction, and regulatory rules may be used to select the payment provider.

Example embodiments of systems and methods for data transmission system between transmitting and receiving devices are provided. In an embodiment, each of the transmitting and receiving devices can contain a master key. The transmitting device can generate a diversified key using the master key, protect a counter value and encrypt data prior to transmitting to the receiving device, which can generate the diversified key based on the master key and can decrypt the data and validate the protected counter value using the diversified key. Example embodiments of systems and methods can be used to provide further authentication and added levels of security for transactions.

One variation of a method for controlling a dynamic transaction card includes: at a first time, accessing a first cryptogram; at a second time, establishing a wireless connection with a mobile computing device; in response to establishing the wireless connection with the mobile computing device, accessing a first token associated with the first cryptogram from the mobile computing device via the wireless connection; generating a first magnetic stripe sequence command representing the first cryptogram and the first token; and in response to detecting a magnetic stripe card reader proximal a magnetic stripe emulator integrated into the dynamic transaction card at a third time succeeding the second time, driving the magnetic stripe emulator according to the first magnetic stripe sequence command.

Methods, systems, and devices, including computer programs encoded on computer storage media, for verifying a digital certificate are provided. One of the methods includes: determining that a first digital certificate is a to-be-invalidated digital certificate; obtaining a first certificate identification of the first digital certificate; sending a recording request to a first node in a blockchain network to cause the first node to record the first certificate identification in a blockchain; obtaining a second certificate identification of a second digital certificate; sending a search request to a second node in the blockchain network to cause the second node to determine whether the second certificate identification is recorded in the blockchain; receiving a search result showing that the second certificate is recorded in the blockchain; and determining that the second digital certificate is invalid. The recording request comprises the first certificate identification, and the search request comprises the second certificate identification.

[Object] To further reduce the processing burden on a store side in the multi-payment. [Solution] There is provided a wireless communication device including: a communication unit configured to perform wireless communication with a connection device; and a control unit configured to encrypt a wireless communication channel with the connection device on the basis of a digital certificate issued by a certificate authority server. The communication unit receives payment information and a valid type of payment from the connection device via the encrypted wireless communication channel. The control unit determines a payment server on the basis of the valid type of payment and causes the communication unit to transmit a payment request based on the payment information to the payment server.

Systems and methods are described for authorizing users and/or devices. An example method may comprise receiving, from a user device, a request to access a function associated with a service account. The request may comprise an identifier of the user device. The example method may comprise determining, based on the identifier, a primary authority holder of the service account. The example method may comprise determining that a first record on a first distributed ledger associated with the primary authority holder indicates that the user device is associated with the primary authority holder. The example method may comprise determining that a second record on a second distributed ledger associated with the user device indicates that the user device is associated with the primary authority holder. The example method may comprise granting, based on the request, the first record, and the second record, the user device access to the function.

System and methods for supporting legacy and tokenized transactions are disclosed. According to one embodiment, in an information processing device comprising at least one computer processor, a method for selecting an electronic payment credential to communicate to a merchant, may include (1) an electronic wallet backend receiving a plurality of payment credentials associated with a payment account; (2) the electronic wallet backend receiving a credential capability for a merchant; (3) the electronic wallet backend selecting one of the payment credentials for a transaction with the merchant based on the credential capability; and (4) the electronic wallet backend communicating the selected payment credential to a point of transaction device for the merchant.

A portable device receives an account information request signal from a merchant machine. The portable device transmits a response message to the merchant machine. The response message comprises the account information for a purchase. The portable device transmits a first message to an account server. The first message comprises a request to get information comprising the purchase amount. The portable device receives a second message comprising the information from the account server. The portable device sends the purchase amount to a display.

A computer system and method for tokenizing an IoT device is provided. The system comprises at least one processor and a memory storing instructions which when executed by the processor configure the processor to perform the method. The method obtaining device information, generating a credential token based on the device information, and processing an electronic transaction using the credential token.