---
title: signatureUsualMarkData
framework: proximityreader
role: symbol
role_heading: Instance Property
path: proximityreader/mobiledriverslicensedatarequest/response/documentelements-swift.struct/signatureusualmarkdata
---

# signatureUsualMarkData

The signature or usual mark data of the identity document holder on record with the issuer.

## Declaration

```swift
let signatureUsualMarkData: Data?
```