A method of forming a fastener may include inserting a blank precursor into a bore of a forming die having an enlarged bore portion. A switching phenomenon is caused in the inter-electrode gap portion by applying a voltage between the first and second electrodes. Accordingly, multimedia service information and content information can be stored in a tag by being written to tag information using a common format, and thus the user can later execute a service operation by easily writing information of a desired service operation to a tag and then simply connecting the tag to a tag reading device. When the apparatus tip encounters a low resistance material, no further driving force is applied to the apparatus.