QNAP Security VioStor NVR (Version: 3.5.1) - Manual (Page 179)

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6.5.1 Create user
User Name
The user name must be 1 to 32 characters in length. It supports alphabets (A-Z),
numbers (0-9), and underscores (_). It is case-insensitive and supports double-byte
characters, such as Chinese, Japanese, and Korean but cannot be a pure number or contain
the following characters:
“ / \ [ ] : ; | = , + * ? < > ` '
Password
The password is case-sensitive and supports maximum 16 characters. It is recommended
to use a password of at least 6 characters.
Select user type
Define the user as an administrator, system manager, or general user.
Camera Access Control
Assign the rights of monitoring (video/audio), playback, and PTZ control to the user.
Note: Please refer to Chapter 6.5.4 for further information of the user access rights.