---
title: identifier
framework: corenfc
role: symbol
role_heading: Instance Property
path: corenfc/nfciso7816tag/identifier
---

# identifier

The unique hardware identifier of the tag.

## Declaration

```swift
var identifier: Data { get }
```

## Discussion

Discussion The identifier data is in big-endian byte order.

## See Also

### Getting Tag Information

- [initialSelectedAID](corenfc/nfciso7816tag/initialselectedaid.md)
- [historicalBytes](corenfc/nfciso7816tag/historicalbytes.md)
- [applicationData](corenfc/nfciso7816tag/applicationdata.md)
- [proprietaryApplicationDataCoding](corenfc/nfciso7816tag/proprietaryapplicationdatacoding.md)