CCTV that was previously common only in public places has become affordable for your home as well. It can offer round the clock surveillance for your home, the driveway or the garden, recording only movement of a person or intruder to a 24-hr DVR (digital video recorder) in the home. Or web-based IP cameras can send “alarm” images or video clips to cloud storage so that you dont even need a DVR in the home – and the recorded images or video cannot be stolen or compromised.
A digital video recorder (DVR) is an electronic device that records video in a digital format to a disk drive, USB flash drive, SD memory card, SSD or other local or networked mass storage device.
A network video recorder (NVR) is a software program that records video in a digital format to a disk drive, USB flash drive, SD memory card or other mass storage device. An NVR contains no dedicated video capture hardware.