There is no need to check in your Trenitalia Regional Digital Ticket.
Your ticket is automatically validated at the scheduled departure time of the train you selected.
🎫 Showing your ticket on board
You will need to show the QR code of your validated ticket.
You can find it by:
opening the Trainline app → View tickets, or
opening your confirmation email → Manage booking → View on Trenitalia
🔁 Changing your Regional Digital Ticket
You can change the date and time as many times as you like until 23:59 the day before your trip.
On the day of travel, you can still make unlimited time changes up until the scheduled departure of your chosen train.