Authentication is not available on following Visualizers:
VZ-9
VZ-9plus with serial number lower than #1008068
VZ-C11
VZ-C12
VZ-C12² with serial number lower than #1009412
VZ-C30
VZ-C32 with serial number lower than #1011797
VZ-27plus
VZ-27plus²
VZ-57plus
The availability on other device models are depending on installed firmware version. Check for newer firmware files (Firmware update) when not available.