In the last decade, our cities have undergone significant transformation due to the widespread adoption of IoT (Internet of Things) sensors and smart devices owned by citizens, resulting in significant improvements in urban life. One of the most common and relevant research fields concerns the monitoring of people's movements, with the aim of enhancing services for citizens. This type of monitoring also pertains to optimizing transportation infrastructure, bike lanes, and public thoroughfares. However, it is also of crucial importance in identifying and quantifying individuals in sensitive areas, such as ensuring safety during large-scale events or at transit points. Additionally, it is essential to introduce new technologies for tracking individuals in emergency situations, to reduce response times and increase the likelihood of success.