USIM 스마트공동인증 is a joint authentication app that supports SKT, KT, and LGU+ telecommunication companies. With this app, users can store their certificates securely in the USIM of their smartphone, eliminating the need to store them separately on a PC or USB. This next-generation authentication service allows users to perform digital signatures, such as financial transactions and identity verification, on PCs without certificates, as well as on various smart banking platforms.

The app offers several key features, including the ability to copy and save certificates to the USIM, set and change the smart authentication password, perform electronic signatures using the certificate stored in the USIM, and delete saved certificates. It also supports fingerprint recognition on Samsung devices with OS 5.0 or higher, providing an added layer of convenience and security.

Please note that this app is currently available only on Samsung devices and is supported by SKT, KT, and LGU+ mobile operators. There is a monthly fee of 990 won (including tax) added to the mobile phone communication fee for using the smart authentication service.

For more information and support, users can visit the developer's website or contact the Dream Security Customer Center.