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# NFCTagReaderSession.Configuration

```
struct Configuration
```

## Topics

### Initializers

[`init(pollingOption: NFCTagReaderSession.PollingOption, iso7816SelectIdentifiers: [String], feliCaSystemCodes: [String])`](/documentation/CoreNFC/NFCTagReaderSession/Configuration/init(pollingOption:iso7816SelectIdentifiers:feliCaSystemCodes:))

### Instance Properties

[`var feliCaSystemCodes: [String]`](/documentation/CoreNFC/NFCTagReaderSession/Configuration/feliCaSystemCodes)

List of FeliCa System Codes to be used in tag detection when NFCTagReaderSession is configured with PollingOption.iso18092 option.
Entries must be specified in “com.apple.developer.nfc.readersession.felica.systemcodes” in Info.plist; all unknown / not matched entries will be dropped.
An empty array indicates all system codes specified in Info.plist will be used.  Subsequent duplicate elements will get dropped.

[`var iso7816SelectIdentifiers: [String]`](/documentation/CoreNFC/NFCTagReaderSession/Configuration/iso7816SelectIdentifiers)

List of ISO7816 Application Identifiers to be used in tag detection when NFCTagReaderSession is configured with PollingOption.iso14443 and/or PollingOption.pace option.
Entries must be specified in “com.apple.developer.nfc.readersession.iso7816.select-identifiers” in Info.plist; all unknown / not matched entries will be dropped.
An empty array indicates all applications specified in Info.plist will be used.  Subsequent duplicate elements will get dropped.

[`var pollingOption: NFCTagReaderSession.PollingOption`](/documentation/CoreNFC/NFCTagReaderSession/Configuration/pollingOption)

RF polling types to perform tag discovery.

---

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