---
title: "keyUpdate(requestFlags:keyIdentifier:message:resultHandler:)"
framework: corenfc
role: symbol
role_heading: Instance Method
path: "corenfc/nfciso15693tag/keyupdate(requestflags:keyidentifier:message:resulthandler:)"
---

# keyUpdate(requestFlags:keyIdentifier:message:resultHandler:)

## Declaration

```swift
@preconcurrency func keyUpdate(requestFlags flags: NFCISO15693RequestFlag, keyIdentifier: Int, message: Data, resultHandler: @escaping @Sendable (Result<(NFCISO15693ResponseFlag, Data), any Error>) -> Void)
```

```swift
func keyUpdate(requestFlags flags: NFCISO15693RequestFlag, keyIdentifier: Int, message: Data, resultHandler: @escaping (Result<(NFCISO15693ResponseFlag, Data), any Error>) -> Void)
```