Long before the introduction of video and audio surveillance, security relied highly upon the human eye. With everyone being more aware of their surroundings and reporting any suspicious behaviour they may see. Now, while the human eye did work well with regards to physical surveillance, there were a few issues. We all know that our eyes can sometimes mistake some events for things they are not. This is why video and audio surveillance were introduced. A lot of non-criminals were being charged for crimes they simply didn’t commit due to it being a case of one word against another. While physical surveillance still plays a part in our security techniques, we are all entirely grateful for the production of video and audio surveillance. With these other options making it possible to catch the correct criminals, especially the ones we may miss with our own eyes. Combining all different types of surveillance techniques makes for the best way to protect our businesses.