In order to increase the security and better control the access to your data, you can now enable a 2 factor authentication for your operators
Solution
In order to illustrate the solution, let's consider the following example. The customer has bought 2 tickets. The on-line shop allows mobile ticket and print@home shipment mode. He selects the mobile ticket shipment mode and pays the order. No tickets have been downloaded or printed yet. The end customer has still the choice between downloading a ticket on his mobile or printing an e-ticket.
The end customer decides to download the first ticket on his mobile. He can't get an e-ticket anymore to prevent the invalidation of the mobile ticket:
The restriction works similarly in the other way. If the end customer prints the second ticket as a print@home, he won't be able anymore to download it as a mobile ticket. Clicking several times on the printable ticket link will open exactly the same PDF file (without invalidating previous tickets).
Getting started
You don't have anything to do. This feature is enabled by default.