---
title: historicalBytes
framework: cryptotokenkit
role: symbol
role_heading: Instance Property
path: cryptotokenkit/tksmartcardatr/historicalbytes
---

# historicalBytes

The ATR historical bytes, not including interface bytes or the TCK (check byte).

## Declaration

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

## See Also

### Accessing ATR Attributes

- [protocols](cryptotokenkit/tksmartcardatr/protocols.md)
- [bytes](cryptotokenkit/tksmartcardatr/bytes.md)
- [historicalRecords](cryptotokenkit/tksmartcardatr/historicalrecords.md)