---
title: useCommandChaining
framework: cryptotokenkit
role: symbol
role_heading: Instance Property
path: cryptotokenkit/tksmartcard/usecommandchaining
---

# useCommandChaining

Whether to use command chaining of APDU with a data field longer than 255 bytes.

## Declaration

```swift
var useCommandChaining: Bool { get set }
```

## Discussion

Discussion By default, this property is set to true when the Smart Card ATR announces that command chaining is supported.

## See Also

### Configuring APDU Behavior

- [cla](cryptotokenkit/tksmartcard/cla.md)
- [useExtendedLength](cryptotokenkit/tksmartcard/useextendedlength.md)