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Use a card reader with Tunder

2 min readUpdated October 28, 2026

Tunder does not connect to card readers yet: here is how to take payments with yours.

Tunder does not offer a direct connection with card readers yet.

You are free to use the terminal of your choice, for example the one from your bank or your payment provider. You simply enter the amount twice: in Tunder, then on the reader.

Take payments with your card reader

The card reader stays independent of Tunder. Tunder records the sale and the payment type; the reader takes the card payment.

  1. Confirm the order in the app

    Add the items to the ticket, then tap the checkout button to go to payment. The total to pay is displayed.

  2. Choose the card payment type

    Select the payment type you use for bank cards.

    • You set it up in the app: ☰, Settings, General tab, “Payment types”. A payment type can have the type “Bank card”.
    • In the back-office (admin.tunder.co): Settings, General tab, “Payment types”.
    • The top two payment types in the list are directly accessible on the payment page.
  3. Enter the amount on the reader

    Type on the reader the same amount as the one shown in Tunder. This is the double entry: Tunder does not send it to the reader.

  4. Have your customer pay, then finish the sale

    Once the reader accepts the payment, finish the sale in Tunder. The ticket keeps a record of the card payment.

Warning. Since Tunder is not linked to the reader, check that both amounts are identical before your customer pays.

Frequently asked questions

Does Tunder connect to my card reader?
No, not for now. Tunder has no direct connection with card readers: you enter the amount by hand on the reader.
Which card reader can I use?
The terminal of your choice: the one from your bank or your payment provider. Tunder does not require any particular reader.
Why do I have to enter the amount twice?
Tunder and the reader do not communicate. You enter the amount in Tunder to record the sale, then on the reader to take the card payment.
How do I record a card payment in Tunder?
At checkout, choose the payment type you use for cards. You can create or edit one in the app: ☰, Settings, General tab, “Payment types”.
Where can I buy hardware compatible with Tunder?
The Hardware page of the website (tunder.co/en/hardware) shows the printers and accessories tested with Tunder.

See also

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