GEFA TAN is a mobile app designed for online customers of GEFA BANK to conveniently and securely authorize their transactions. This app allows users to receive Transaction Authentication Numbers (TANs) on their iPhone or iPad, which they can use to authorize financing requests and services in the "GEFA online" web portal. It is important to note that GEFA TAN can only be used in conjunction with an access to the "GEFA online" web portal that enables the authorization of TAN-required transactions.

With GEFA TAN, GEFA BANK customers can enjoy the convenience of authorizing transactions directly from their mobile devices. The app provides a secure and efficient way to receive TANs, eliminating the need for physical tokens or other external devices. Users can easily access and manage their TANs within the app, ensuring a seamless and hassle-free transaction authorization process.

Overall, GEFA TAN offers a user-friendly and reliable solution for GEFA BANK customers to authorize their transactions. With its focus on convenience and security, this app enhances the banking experience for online customers, providing them with a seamless and efficient way to manage their financial transactions.