Vivotek 9189 Series User Manual page 19

VIVOTEK
Some, but not all special ASCII characters are supported: !, $, %, -, ., @, ^, _, and ~.
You can use them in the password combination.
10-3. Another prompt will request for the password you just configured. Enter the password
and then you can start configure your camera and see the live view.
User's Manual - 19