KB Klíč is a productivity app designed for Android users, providing secure access to MojeBanka online banking and other services offered by Komerční banka. The app streamlines the authentication process by eliminating the need for texted codes, allowing users to authorize transactions directly within the app. Activation requires a KB ID and an activation code, which can be obtained through designated channels. Users can set a personal identification number (PIN) and utilize fingerprint recognition for an added layer of security.

This app is built with user security in mind, ensuring that sensitive information, such as fingerprints, is stored securely on the device. Users must confirm activation requests either online or by scanning a pictorial code when offline. However, if the app detects multiple incorrect PIN entries, access will be blocked, requiring reactivation through alternative means. Overall, KB Klíč offers a convenient and secure way to manage online banking.