The technology's world is evolving and changing each second. However, its objective has always been to facilitate human's life (with some exceptions). Nowadays, much emphasis is now being placed in the topic called Internet of Things (IoT), which is nothing but digitalizing our world. In other words, convert every tangible thing for humans to bits sequences. This concept is now deriving to both scientific and commercial fields. This boom is because it is possible to extract a huge amount of information from many different fields, and as it is known, information is power. Imotion Retail is a company which is focused in commercial field and they give support to other companies to extract data of their clients. The hardware used to extract that data it the Kinect sensor of Microsoft which is responsible of monitoring all the customers inside. However, as in all technological components, the sensor has limitation that affects to the final product. Intel has recently launched a technology of 3D cameras (as Kinect) called Realsense. The specifications of this product given by the company are very favourable and in some terms, better than Kinect. In order to check these specifications, a set of test has been done to analyse the performance and behaviour of this technology in each feature. This project contains the results of each test, but it is specially focused in the functionality of body detection and tracking because this is used by Imotion Retail in the Kinect's technology. Precisely in this module, a new software has been developed to optimize the customers monitoring applying filters and algorithms that avoid possible cases which induce to false data. Finally, the RealSense technology with the developed software has been implemented in different real environments to check out if it is suitable for this type of applications.