マイナンバーカードの安全性｜デジタル庁

This page explains the security of the My Number Card. The government has established a safe usage environment from technical and operational perspectives. In case of loss or theft, users can immediately suspend the card's functions via a 24/7 hotline, and reissue it within one week as a standard. The card features anti-counterfeiting measures on its surface, and accessing IC chip information requires a PIN or facial authentication. Viewing just the My Number cannot compromise personal information. Unauthorized access attempts damage the chip. Information is managed in a decentralized manner, exchanged only when necessary, and the system has obtained international security standard certification.