Cam ID / User: Camera Network ID number. Login password: Password for viewing and log in directly to the camera. Access code: for registered users after viewing this add a password to the user under the camera. Difference: Cam ID and Login password login can only see and manage a single camera. To manage multiple cameras firstly you must register a user name and the user devices to view video with access code password. Client Software (APP) Download: the mobile client can be downloaded and installed by scanning the QR code on the package box. For Android device it can be downloaded in Google Play by searching 9527; For iOS device it can be downloaded in App Store by searching 9527. Computer Client Software: the user can also be viewed on the LAN or remote computer network of only this device or any other devices (up to 16)of the video monitor screen about the using details you can click Help of the client or view the CD-ROM