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# relinkAccount(using:)

Presents a sheet for the merchant to re-accept Tap to Pay on iPhone’s Terms and Conditions on a device using a different Apple Account.

```
func relinkAccount(using token: PaymentCardReader.Token) async throws
```

## Parameters

`token`

The token from your payment service provider. This token contains the merchant identifier and must include permission for relinking.

## Discussion

To use Tap to Pay on iPhone, your participating payment service provider must provide the merchant using your app with a secure token.
This token contains a unique identifier for each merchant and also specifies if relinking using a different Apple Account is allowed.

To use this method, a merchant must have already accepted the Terms and Conditions using [`linkAccount(using:)`](/documentation/ProximityReader/PaymentCardReader/linkAccount(using:)).

After a merchant accepts the Terms and Conditions for their specific merchant identifier on one device,
they don’t need to accept it again on additional devices that use the same identifier.

> throws: ``doc://com.apple.ProximityReader/documentation/ProximityReader/PaymentCardReaderError/accountLinkingFailed``, ``doc://com.apple.ProximityReader/documentation/ProximityReader/PaymentCardReaderError/accountLinkingCancelled``,
> or other relevant errors in ``doc://com.apple.ProximityReader/documentation/ProximityReader/PaymentCardReaderError``.

---

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