---
title: atr
framework: cryptotokenkit
role: symbol
role_heading: Instance Property
path: cryptotokenkit/tksmartcardslot/atr
---

# atr

The ATR (Answer to Reset) of the inserted Smart Card, or nil if no Smart Card is inserted or the inserted Smart Card is mute.

## Declaration

```swift
var atr: TKSmartCardATR? { get }
```

## See Also

### Reading the Answer to Reset

- [TKSmartCardATR](cryptotokenkit/tksmartcardatr.md)