The major aspect here is that 3D stereo people counter devices can capture the image at a three dimensional format, so the depth factor is always going to be the key. These devices analyze the images at a four data-point system; height, mass, speed, and direction, so the accuracy will always be higher than 90%. Since all the shadows and lighting don’t have depth, 3D stereo people counter devices can differentiate between these conditions and real time people imaging.
The one and only shortcoming of a 3D stereo people counter device is the cost factor. Since it has a double lens and so many advantages compared to other types of people counter devices in the market, it is priced pretty high. Because the solution requires extra special devices and equipment, the price automatically increases.
Both single lens and 3D stereo people counter devices have their own advantages and disadvantages. The crucial thing here is for retailers to decide what exactly they need to observe and what is important for them in their stores, hence invest in a people counter device according to their expectations.