Make sure to start your trip before boarding public transport!
Once you have started the trip, you can travel anywhere within the area of validity of the FAIRTIQ region (click on your region to know more about the area of validity).
If you run into a ticket inspector, just click on " display ticket ".
However, be careful: You are responsible to make sure that the trip has been started correctly before boarding the vehicle. If FAIRTIQ has not been correctly activated, you DO NOT OWN a valid ticket.
Find more information on how FAIRTIQ works here.