Authentication of consumable by opening and closing of parts

An operation method of an image forming apparatus, the operation method comprising:

• sensing a preset event in the image forming apparatus;
• confirming, as the preset event is sensed, an opening/closing history of a component to access a consumable in the image forming apparatus, based on a signal sensed by a sensor in the image forming apparatus;
• skipping performance of an authentication operation on the consumable in a case where the opening/closing history of the component is not detected;
• and
• performing the authentication operation on the consumable in a case where the opening/closing history of the component is detected.

A non-transitory computer-readable storage medium comprising:

• instructions to sense a preset event in an image forming apparatus;
• instructions to confirm, as the event is sensed, an opening/closing history of a component to access a consumable in the image forming apparatus, based on a signal sensed by a sensor in the image forming apparatus;
• instructions to skip performance of an authentication operation on the consumable in a case where the opening/closing history of the component is not detected;
• and
• instructions to perform the authentication operation on the consumable in a case where the opening/closing history of the component is detected.