An electronic device comprises: a housing; a touchscreen display exposed through a first portion of the housing; at least one connecting member connected to a second portion of the housing; at least one near distance wireless communication circuit positioned in the housing; a hardware secure element configured to store security information; a processor electrically connected to the touchscreen display, the at least one near distance wireless communication circuit, and the hardware secure element and positioned in the housing; and a memory electrically connected to the processor and positioned in the housing. The memory stores a first operating system (OS) including a user interface for a payment application and further stores a first application programming interface (API) for permitting access to the hardware secure element. When instructions stored by the memory are executed, the instructions cause the processor to: wirelessly pair with an external electronic device by using the at least one near distance wireless communication circuit; receive meta data on a card from the external electronic device through the at least one near distance wireless communication circuit; receive data on a plurality of payment cards from the external electronic device through the at least one near distance wireless communication circuit; store the data in the hardware secure element without installing other application programs related to the data; display, on the touchscreen display, the user interface for listing the plurality of accessed payment cards by using the meta data through the first API; receive a user input for selecting one of the plurality of payment cards through the touchscreen display; and transmit data on the basis of the determined payment card by using the at least one near distance wireless communication circuit. The at least one connecting member has a shape that encompasses a user's wrist. Additional various embodiments are possible.