A granny cam is commonly a camcorder, meaning it is a video camera and video recorder in one. It is often connected to the Internet, enabling real-time monitoring from another location. Granny cams can also be self-contained cameras, meaning they are not connected to the Internet, and store recorded data on a memory card or similar device. So-called complete surveillance systems are sometimes used as granny cams, and usually include a digital video recorder, several cameras, and monitors.
St Georges Care Agency website