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By using the Waltti Card Reader application you can check the validity of your travel card or disposable card.
The Waltti card reader displays the current season tickets, remaining value, latest value ticket, and previous tickets when you place your NFC phone against the card.
You receive a receipt of your latest value ticket by sending the ticket details to your email.
Make sure the NFC feature is turned on as the Waltti card reader uses the phone's NFC feature.
The application only reads Waltti travel and single-charge card.