Support & Contact – De Lijn General questions Apps and mobile website What do I need in order to use the De Lijn app or site? Published on February 11, 2020 08:15 Wireless or mobile Internet is required to use our app and site wherever you are. Any questions about this subject?Fill in this form. Related articles How do I activate my ticket, dayticket or 10-journeys ticket? What can the De Lijn app do? Where can I find real-time information on my bus or tram? Which means can I use to pay? How do I pay contactless?