Simply entering a username and password for a login is no longer secure these days. Almost all leading online platforms therefore offer the option to log in with an additional component. This so-called two-factor authentication (2FA) provides high protection for your user account against misuse and identity theft, even if your username and password fall into the wrong hands. A commonly used method for 2FA is the time-based one-time password method, or TOTP. Authenticator apps on smartphones are often used for this purpose. However, TOTP can be easily compromised due to the limited security of smartphones. Maximum security is provided by hardware-based TOTP generators. The REINER SCT Authenticator securely stores the electronic codes for logins in its hardware and then generates TOTP codes with high accuracy every 30 seconds. It operates without an internet connection and is therefore immune to online attacks. Its functionality can also be protected by a PIN. The REINER SCT Authenticator uses its built-in camera to recognize the authentication data displayed by the online platform in the form of a QR code in fractions of a second and assigns it to an account.