Cover device, and electronic device and method for identifying cover device

An electronic device comprising:

• a housing;
• a memory;
• a wireless communication circuit disposed within the housing;
• a touch screen display exposed to an exterior of the housing;
• and
• a processor disposed within the housing and electrically connected to the wireless communication circuit and the touch screen display,
• wherein the processor is configured to:
• sense a rear cover of a cover device mounted on the electronic device,
• receive a first identifier from the rear cover,
• in response to identifying that the first identifier does not match any of one or more identifiers stored in the memory, display a message on the touch screen display,
• sense a front cover of the cover device mounted on the touch screen display,
• identify a conductor pattern of a plurality of conductor pads in the mounted front cover by scanning the touch screen display on which the front cover is mounted,
• identify an area specified by an outer boundary of the conductor pattern as a conductor pattern region,
• identify a distance from a center point of the conductor pattern region to a predetermined point on the touch screen display, and
• identify the mounted front cover based on the identified distance.