휴대폰 인증서 서비스유비키_UBIKey is a finance application available for Android devices. It allows users to securely store and use their authentication certificates on their smartphones or USIM cards. With this app, users can safely perform actions such as login, financial transactions, and identity verification that require authentication certificates. The app offers two main features: the ability to store certificates on the app or USIM card using a smartphone icon, and the ability to issue and store certificates on the USIM card using a security token icon. This app is compatible with major Korean banks, card companies, insurance companies, public institutions, and other affiliated websites, providing convenient and secure access to various services. Please note that the app requires Android 4.1 or higher to function properly.