---
title: PKPaymentInformationEventExtension
framework: passkit
role: symbol
role_heading: Class
path: passkit/pkpaymentinformationeventextension
---

# PKPaymentInformationEventExtension

An abstract superclass for an extension to collect payment information and sign transaction data in a QR code purchase.

## Declaration

```swift
class PKPaymentInformationEventExtension
```

## Overview

Overview important: Before you can add a QR purchase extension you need an entitlement from Apple. For more information on requesting an entitlement, contact apple-pay-inquiries@apple.com.

## Relationships

### Inherits From

- [NSObject](objectivec/nsobject-swift.class.md)

### Conforms To

- [CVarArg](swift/cvararg.md)
- [CustomDebugStringConvertible](swift/customdebugstringconvertible.md)
- [CustomStringConvertible](swift/customstringconvertible.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [NSObjectProtocol](objectivec/nsobjectprotocol.md)

## See Also

### QR transaction information

- [PKPaymentInformationRequestHandling](passkit/pkpaymentinformationrequesthandling.md)