A mobile terminal has a memory, short-range communication interface, and a controller. The memory stores payment information and the controller compares predetermined first authentication information with second authentication information. The controller enables or disables a payment function based on a result of the comparison, and establishes a connection with a payment terminal through the short-range communication interface when the payment function is enabled. Once the connection is established, the payment information is transmitted to the payment terminal through the short-range communication interface.