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Security is more important than ever these days, but many people worry that it is very expensive. But recently, the widespread use of personal computers has made it easy to monitor what is going on around your home right from your desktop with a DRV card installed. This device is installed in your computer. The DVR card interfaces with monitoring software to connect to CCTV camera set up in your home. If you are concerned about security, but you don't have a lot of money to have a fancy security system installed, consider buying a simple DVR card and a few cameras. It could make all the difference.