Contact tracing system for public transport users

This program uses an SMS system to trace the chain of contamination by easily identifying the people who borrowed the same public transport vehicle as a sick patient. The system thus makes it possible to find people who have potentially been exposed and to test them quickly, then disinfect the vehicle in question. The advantage of this approach is that the government does not have to follow people by geolocation and the system is completely accessible to all strata of the population.