According to certain embodiments, an electronic device comprises a housing comprising a front surface and a rear surface oriented in a direction opposite to the front surface, a touchscreen display exposed through at least a portion of the front surface, a fingerprint sensor arranged between the touchscreen display and the rear surface underlapping a region of the touchscreen display when viewed from above the front surface, at least one processor operatively connected to the touchscreen display and the fingerprint sensor, and a memory operatively connected to the at least one processor, wherein the memory stores instructions for causing the at least one processor, when executed, to perform operations comprising displaying a user interface comprising an object on the touchscreen display, receiving a gesture input for dragging the object toward the region, the gesture input inputted through the touchscreen display, identifying whether a finger providing the gesture input is a predetermined finger registered for authentication through the fingerprint sensor, and activating the fingerprint sensor based at least in part on the identification.