An electronic device according to various embodiments of the present invention may comprise: a wireless communication interface; a display; a magnetic stripe transmission (MST) module comprising a coil for inducing generation of a magnetic field; a processor electrically connected to the wireless communication interface, the display, and the MST module; and a memory electrically connected to the processor, wherein the memory stores instructions for controlling the processor, the instructions, when executed, causing the processor to: receive digital card key information for unlocking a door lock apparatus from an external device through the wireless communication interface; convert the digital card information into an MST signal containing the same; activate the MST module in response to an MST module activation request input thereto; and unlock the door lock apparatus by transmitting the converted MST signal through magnetic induction and waking up the door lock apparatus through the transmitted MST signal. Other embodiments are also possible.