---
title: instanceAID
framework: secureelementcredential
role: symbol
role_heading: Instance Property
path: secureelementcredential/credentialsession/credential/instanceinfo/instanceaid
---

# instanceAID

The unique identifier for the applet instance.

## Declaration

```swift
let instanceAID: Data
```

## Discussion

Discussion Use this identifier in performWiredTransaction(using:over:instanceAID:) for UIKit or performTransactionInWiredMode(using:instanceAID:) for SwiftUI, and when selecting this instance to perform data transceiving.

## See Also

### Inspecting instance identifiers

- [packageAID](secureelementcredential/credentialsession/credential/instanceinfo/packageaid.md)
- [moduleAID](secureelementcredential/credentialsession/credential/instanceinfo/moduleaid.md)