Digital-camera-based CCTV have many advantages that its predecessor. Sharper images and easier access from anywhere around the globe are some of the convenience offered; not to mention the low cost in system upgrading. A high resolution image sensitivity sensor is used on digital technologies. This enables you to get sharper and clearer pictures that can be helpful on crime fighting purpose by the authority. The mixed between analog cameras with digital video recording, known as DVR, technology are still commonly used, but it has many drawbacks due to many image data loss while in converting process.
You can easily connect the system to the internet, that way you will still be able to monitor the camera recordings and the system itself from any part of the world with internet access.
Digital Video Recording or DVR usually comes to support multiple channels for multiple cameras which allow you to plug-and-play the additional cameras to the box without having much difficulty on pulling many cables here and there.
Digital technology offers a lot of advantages that will make your life easier.