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 and to operate a secure element, the mobile device comprising a non-transitory computer readable storage medium comprising computer-executable instructions, a central processing unit, a contactless interface and a communication interface, the computer-executable instructions, upon execution, causing to execute:
- acquiring, by the secure element, via the contactless interface of the mobile device, data associated with a payment apparatus;
- obtaining a transaction authorization from a remote financial, the transaction authorization being based, at least partially, on data that is inaccessible to the central processing unit and processed by the secure element;
- and
- wherein the data that is inaccessible to the central processing unit and processed by the secure element include at least a portion of the data associated with the payment apparatus.