# SignatureData Structure Reference



## Scope and provenance

- Product: mobile
- Status: Imported reference snapshot. Import date is not a verification date or guarantee of current release support.
- SDK version: Not declared for this page. Versions in examples must not be assumed current.
- Environment: Page-specific. Confirm the environment host, credentials, and service configuration; do not infer them from another product.
- Source: https://documentation.idmission.com/identity/iOS-SDK-2/Structs/SignatureData.html
- Imported at: 2026-10-25T05:00:44.899Z
- Canonical page: https://docs.idmission.com/mobile/reference/ios/Structs/SignatureData
- Agent index: https://docs.idmission.com/llms.txt

---

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# SignatureData

```
public struct SignatureData : Codable
```

Child structure of `CustomerEnrollRequestV3`, `CustomerValidateIdDataRequestV3`, `CustomerLiveCheckDataRequestV3`, `CustomerValidateIdFaceMatchDataRequestV3`, `CustomerEnrollDataRequestV3`, `CustomerEnrollBiometricDataRequestV3`, and `CustomerVerifyDataRequestV3`.

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### Properties

- <a id="/s:17IDentitySDK_Swift13SignatureDataV14signatureImageSSSgvp"></a>

  <a id="//apple_ref/swift/Property/signatureImage"></a>

  `signatureImage`

  Signature of the customer. This should contain base64 Signature data.

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  #### Declaration

  Swift

  ```
  public var signatureImage: String?
  ```

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### Initialization

- <a id="/s:17IDentitySDK_Swift13SignatureDataV14signatureImageACSSSg_tcfc"></a>

  <a id="//apple_ref/swift/Method/init(signatureImage:)"></a>

  `init(signatureImage:)`

  Designated initializer.

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  #### Declaration

  Swift

  ```
  public init(signatureImage: String? = nil)
  ```

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  #### Parameters

  |                  |                                                                        |
  | ---------------- | ---------------------------------------------------------------------- |
  | `signatureImage` | Signature of the customer. This should contain base64 Signature data.  |

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