PetWatcher – Ubiquitous Device Proximity Location System

This paper presents a solution, PetWatcher, that uses BLE technology in conjunction with the Blynk IoT platform to monitor the proximity of specific devices to a landmark. The main objective is to monitor the presence of devices, placed on animals, through MAC address, in relation to a fixed point, controlling the movement of the devices in a specific area. The system was developed using the ESP32 microcontroller and performs checks whenever it detects movement from the inside of the fixed point, or detects the iTAG signal on the outside of the fixed point, displaying information in real time through the Blynk application. Tests were carried out throughout the development of the system and in the final tests it was observed that the system meets the requirements for which it was developed. The presentation of the solution shows potential for several practical applications, including animal location monitoring, access monitoring and home security.