Now, meet the easier joint certificate issuance manual in the palm of your hand.I already have a certificate and it says to reissue it.If device initialization, unlocking, fingerprint addition, etc. occur after issuing the certificate, the devices OS destroys previous lock information, so the certificate becomes unusable. Sorry for the inconvenience, but please issue it again.Can foreigners living in Korea also use it?yes it is possible It is possible if you have a mobile phone in your name or a card issued in Korea. Alternatively, foreigners can issue Toss Certificates if they have an account in their own name at a domestic bank.- This app provides only relevant information, and does not represent a government agency. (Source: www.ips.go.kr)