Design of a people access control system using the ESP32 module and Internet of Things for a sanitory facility in a shopping mall

Access control and management of customer in shopping centers is an important task. In this context, some shopping centers implemented payment system to access sanitary facilities. The collected money helps to keep the installations clean. According to managers the monetary report of workers is unprecise. To contrast the inaccurate reports, this research describes the design of a system to manage the data of people that access the toilets using the Internet of Things. The ESP32CAM module was programmed to capture images of people walking inside and outside of the facility. With the use of image processing and decision algorithms, the number of people that access the facility can be managed remotely through a web server. For this purpose, the information is sent to a cloud server using the Thingspeak platform. The system is design to register data from a triple access system where people can pay directly; show a receipt of consumption in the stores; or workers can show their identifications with RFID.