A Master Password is used to protect sensitive information like site passwords.  If you create a Master Password you will be asked to enter it once per session when &brandShortName; retrieves saved information protected by the password.
主密码用于保护敏感的数据（如网站密码）。如果您创建了主密码，那么每次运行 &brandShortName; 后，若要读取已保存的敏感信息，必须再次输入主密码。