Nowdays, the entire world is still facing the COVID-19 pandemic. Get the virus under control is the first goal in order to return to a normal life. Epidemiological studies show that the spreading of the virus is possible from an infected person’s mouth or nose liquid. It is important to identify COVID-19 clusters (a group of people positive to COVID-19 test) and isolate, in orther to avoid the virus spread. Mass screening is useful to test many people in the shortest time, to identify positive patients. Different kind of tests are available on the market, mostly known as invasive. Invasive tests can be difficult to manage due to the necessity of medichal assistants and, in addition to that, if a person needs to be testes many times it can be stressful or dangerous too.