Transaction card with integrated USB device

A method for completing a transaction by transaction card, the method comprising:

• receiving, from a computing device through a computer interface device, a first data packet comprising a request associated with a transaction, the transaction being associated with a payment authentication protocol, the first data packet being compatible with an interface protocol;
• processing, by a card reader module disposed on the transaction card, the first data packet to generate a second data packet compatible with the payment authentication protocol, the second data packet comprising at least one command application protocol data unit (APDU);
• processing the request using a secure element disposed on the transaction card;
• generating a third data packet based on the processing of the request;
• processing, by the card reader module, the third data packet to generate a fourth data packet compatible with the interface protocol, the fourth data packet comprising at least a USB protocol command;
• and
• transmitting, to the computing device through the computer interface device, the fourth data packet.

A transaction card comprising:

• a computer interface device configured to connect to a port of a computing device;
• at least one processor configured to execute a transaction associated with a payment authentication protocol;
• and
• a card reader module configured to:
• detect that the computer interface device has been connected to the port of the computing device;
• receive, in response to the detected connection to the port of the computing device, a first request associated with the transaction, the first request being associated with a data communication protocol;
• process the first request to generate a second request being compatible with the payment authentication protocol;
• receive, from the at least one processor, a first response based on the second request, wherein the first response is compatible with the payment authentication protocol;
• process the first response to generate a second response, the second response being associated with the data communication protocol;
• and
• transmit, to the computer interface device, the fourth data packet to complete the transaction.