Transaction Systems, and Related Methods

An application for a portable device, the application being arranged to enable completion of transactions, the portable device comprising an input mechanism arranged to enable input of data into the portable device, a selection mechanism, and a communication module arranged to transmit data to a remote server, wherein the application is arranged to:

• enable input of an identifier using the input mechanism;
• present to a user at least one payment mechanism;
• enable the user to select a payment mechanism to be associated with the identifier using the selection mechanism;
• and
• transmit data relating to the identifier and the payment mechanism selection to a remote server using the communication module;
• wherein completion of a subsequent transaction related to the identifier is enabled using the selected payment mechanism.

A method of completing transactions, comprising:

• detecting an identifier;
• identifying a payment mechanism associated with the identifier, wherein the payment mechanism is related to a payment card;
• and
• completing the transaction using the payment mechanism.