Is there a self-service ticket machine in Tianjin? Where is it? Is it useful? How to use it?

I know there are automatic ticket collection machines in the following four places: the right-hand side of the ticket hall by the East Railway Station, and the second one on the right-hand side of the entrance hall by the East Railway Station. You can see it after going through security check and turning right. The third one is in the waiting hall on the second floor of the side (north side) of the East Station, where there will be a bus stop in a row. Look at one. The fourth one is in the waiting hall of the West Railway Station. Turn right after entering the door and walk 100m, and you will see it. The specific method is quite complete: the machine is marked with a network ticket machine (or the ticket machine can't remember clearly), which is a touch screen machine. Just follow the prompts and you need to bring your ID card. 1. Click to collect tickets, 2. Put your ID card in the sensing area, 3. Wait for the ticket information to appear, click Print, and then press 4. Pick up the ticket.