There are a number of different types of spy surveillance cameras, often divided into different categories based on certain features of such cameras. One of the most common types of camera is one that is part of a closed-circuit television (CCTV) system, which feeds images directly to a bank of recorders and monitors.
Original Article Source Credits: Wise Geek , https://www.wisegeek.net/
Article Written By: G. Wiesen
