Method, device and secure element for conducting a secured financial transaction on a device

  • US 10,504,102 B2
  • Filed: 01/18/2019
  • Issued: 12/10/2019
  • Est. Priority Date: 02/29/2012
  • Status: Active Grant
First Claim
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1. A method of operating a mobile device used as a payment terminal, the mobile device being distinct from a dedicated payment terminal, the mobile device being configured to run a point of sale (POS) application for receiving a payment from a customer and to operate a secure element, the mobile device comprising a central processing unit, a contactless interface comprising a Contactless Front End and a communication interface, the method comprising:

  • establishing, through the communication interface of the mobile device, a secured communication channel between the secure element and a remote server, the secured communication channel being based on encryption keys;

    sending, by a payment applet operated by the secure element, a request to enable a reader mode of the Contactless Front End;

    receiving, by the secure element, via the contactless interface of the mobile device, and from a payment apparatus, data associated with the payment apparatus, the data identifying the customer'"'"'s account, at least a portion of the data associated with the payment apparatus being solely accessible by the secure element;

    encrypting, by the secure element, the at least the portion of the data associated with the payment apparatus, thereby generating encrypted data;

    sending over the secured communication channel, to the remote server, the encrypted data and a merchant identifier stored in the secure element so that a transaction may be processed;

    receiving, from the remote server, an indicator that the transaction was authorized;

    causing display of an indication that the transaction was authorized;

    sending, by the payment applet, a request to deactivate the reader mode of the Contactless Front End; and

    closing the secured communication channel.

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