As of 2026, you generally do not need a paper ticket for Eurail, as the "Eurail Mobile Pass" has become the industry standard. This digital pass is managed entirely through the Rail Planner app on your smartphone, allowing you to activate your travel days, search for train connections, and display a QR code for ticket inspectors. However, while the pass itself is digital, physical seat reservations are still required for many high-speed and night trains in countries like France, Italy, and Spain. While many of these can now be issued as e-tickets, some specific cross-border routes or private operators may still require a physical paper reservation to be mailed to you or printed at a station kiosk. If you are a traditionalist, Eurail still offers a physical "Paper Pass" for a small shipping fee, which requires you to manually log every journey in a travel diary. For most travelers in 2026, the mobile version is preferred for its "Lost Pass" protection, which allows you to restore your ticket on a new device if your phone is lost or stolen.