You need a smartphone that runs at least iOS 15 or Android 9. If you don't know which operating system your smartphone runs on, you can check this in your smartphone's settings. You also need to be online to purchase tickets and make bookings. You can find the access requirements under “What information do I need to register for hvv switch?”
To use the hvv switch app version 2.0, you need at least “iOS 16” for the iOS operating system and “Android 10” for Android."
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