In 2026, the requirement to "validate" (time-stamp) a ticket in Switzerland is almost entirely obsolete for most travelers, provided you are using the SBB Mobile app or have a standard paper ticket with a specific date and time printed on it. Most Swiss tickets are now "system-validated" at the time of purchase. However, there is one major exception: Multi-journey cards (Mehrfahrtenkarten). If you have a physical paper card that contains multiple "trips" (e.g., a 6-ride pass), you must insert it into the orange or yellow validating machines located on the platform or inside the bus/tram before you board. Failure to do so is considered traveling without a valid ticket and can result in a fine of at least CHF 90. If you are using a Swiss Travel Pass, you do not need to validate it daily; you simply show the digital QR code on your phone when requested by the conductor. The general rule in Switzerland is "buy before you board," as you cannot purchase tickets from the conductor on local or regional trains, and the fines are strictly enforced without exception.