The smart ear tag is installed on the dog’s ear and in addition to electronic identification, it is possible to install various sensors on it. Its simple model is only an electronic ID like an injectable microchip. Another advantage of the ear tag compared to an injectable microchip is the possibility of reading the ID with the eyes. Also, its data exchange range can be much longer than injectable microchips (up to 10 meters) and it is possible to install different sensors on them.