<!--
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    "macCatalyst: 13.1.0 -"
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  "documentType" : "symbol",
  "framework" : "CoreNFC",
  "identifier" : "/documentation/CoreNFC/NFCNDEFTag",
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    "kind" : "Protocol",
    "modules" : [
      "Core NFC"
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    "preciseIdentifier" : "c:objc(pl)NFCNDEFTag"
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  "title" : "NFCNDEFTag"
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-->

# NFCNDEFTag

An interface for interacting with an NDEF tag.

```
protocol NFCNDEFTag : NSCopying, NSSecureCoding, NSObjectProtocol
```

## Topics

### Getting the Tag Status

[`isAvailable`](/documentation/CoreNFC/NFCNDEFTag/isAvailable)

A Boolean value that determines whether the NDEF tag is available in the current reader session.

[`queryNDEFStatus(completionHandler:)`](/documentation/CoreNFC/NFCNDEFTag/queryNDEFStatus(completionHandler:))

Asks the reader session for the NDEF support status of the tag.

[`NFCNDEFStatus`](/documentation/CoreNFC/NFCNDEFStatus)

Constants that indicate status for an NDEF tag.

### Reading the Tag

[`readNDEF(completionHandler:)`](/documentation/CoreNFC/NFCNDEFTag/readNDEF(completionHandler:))

Retrieves an NDEF message from the tag.

### Writing to the Tag

[`writeNDEF(_:completionHandler:)`](/documentation/CoreNFC/NFCNDEFTag/writeNDEF(_:completionHandler:))

Saves an NDEF message to a writable tag.

[`writeLock(completionHandler:)`](/documentation/CoreNFC/NFCNDEFTag/writeLock(completionHandler:))

Changes the NDEF tag status to read-only, preventing future write operations.


---

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