> For the complete documentation index, see [llms.txt](https://docs.accurascan.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.accurascan.com/language/xamarin/functions/facematch-and-liveness.md).

# Facematch & Liveness

## Facematch

### The method use to start Facematch

```
accuraService.StartFaceMatch(accuraConfs, config, appOriantation, new AccuraScanResultCallBack());
```

### *Parameter:*

* *accuraConfs*: JSON Object
  * enableLogs: Boolean
  * with\_face: Boolean
  * face\_uri: URI
* *config*: JSON Object
  * feedbackTextSize: integer
  * feedBackframeMessage: String
  * feedBackAwayMessage: String
  * feedBackOpenEyesMessage: String
  * feedBackCloserMessage: String
  * feedBackCenterMessage: String
  * feedBackMultipleFaceMessage: String
  * feedBackHeadStraightMessage: String
  * feedBackBlurFaceMessage: String
  * feedBackGlareFaceMessage: String
  * setBlurPercentage: integer
  * setGlarePercentage\_0: integer
  * setGlarePercentage\_1: integer
* *Orientation*: String (Default portrait)

### ***Response:*** 

***Success***: JSON Response\
\&#xNAN;***Error***: String

#### Example Function:

```
public partial class MainPage : ContentPage
{
    public MainPage()
    {
        JObject accuraConfigObj = JObject.Parse(@"{
            'enableLogs' : false,
            'with_face' : true,
            'face_uri' : 'your face uri'
        }");
        JObject configObj = JObject.Parse(@"{
            'feedbackTextSize' : 18,
            'feedBackframeMessage' : 'Frame Your Face',
            'feedBackLowLightMessage' : 'Low light detected',
            'feedBackStartMessage' : 'Put your face inside the oval',
            'feedBackAwayMessage' : 'Move Phone Away',
            'feedBackOpenEyesMessage' : 'Keep Your Eyes Open',
            'feedBackCloserMessage' : 'Move Phone Closer',
            'feedBackCenterMessage' : 'Move Phone Center',
            'feedBackMultipleFaceMessage' : 'Multiple Face Detected',
            'feedBackHeadStraightMessage' : 'Keep Your Head Straight',
            'feedBackBlurFaceMessage' : 'Blur Detected Over Face',
            'feedBackGlareFaceMessage' : 'Glare Detected',
            'feedBackProcessingMessage' : 'Processing...',
            'setBlurPercentage' : 99,
            'setGlarePercentage_0' : -1,
            'setGlarePercentage_1' : -1,
            'isShowLogo' : true
        }");
        accuraService.StartFaceMatch(accuraConfigObj.ToString(), configObj.ToString(), appOriantation, new AccuraScanResultCallBack());
    }
}
public class AccuraScanResultCallBack : AccuraServiceCallBack {
    public void InvokeResult(string error, string result) {
        if (error != null) {
            // Error block.
        }
        else {
            // Result from the SDK
        }
    }
}
```

## Liveness

### The method use to start Liveness

```
accuraService.StartLiveness(accuraConfs, config, appOriantation, new AccuraScanResultCallBack());
```

### *Parameter:*

* *accuraConfs*: JSON Object
  * enableLogs: Boolean
  * with\_face: Boolean
  * face\_uri: URI
* *config*: JSON Object
  * feedbackTextSize: integer
  * feedBackframeMessage: String
  * feedBackAwayMessage: String
  * feedBackOpenEyesMessage: String
  * feedBackCloserMessage: String
  * feedBackCenterMessage: String
  * feedBackMultipleFaceMessage: String
  * feedBackHeadStraightMessage: String
  * feedBackBlurFaceMessage: String
  * feedBackGlareFaceMessage: String
  * setBlurPercentage: integer
  * setGlarePercentage\_0: integer
  * setGlarePercentage\_1: integer
  * isSaveImage: Boolean
  * liveness\_url: URL **(Require)**
  * contentType: String
  * feedBackLowLightMessage: String
  * feedbackLowLightTolerence: integer,
  * feedBackStartMessage: String
  * feedBackLookLeftMessage: String
  * feedBackLookRightMessage: String
  * feedBackOralInfoMessage: String
  * enableOralVerification: Boolean,
  * codeTextColor: String
* *Orientation*: String (Default portrait)

### ***Response:*** 

***Success***: JSON Response\
\&#xNAN;***Error***: String

#### Example Function:

```
public partial class MainPage : ContentPage
{
    public MainPage()
    {
        JObject accuraConfigObj = JObject.Parse(@"{
            'enableLogs' : false,
            'with_face' : false,
            'face_uri' : 'your face uri'}");
        JObject configObj = JObject.Parse(@"{
            'feedbackTextSize' : 18,
            'feedBackframeMessage' : 'Frame Your Face',
            'feedBackAwayMessage' : 'Move Phone Away',
            'feedBackOpenEyesMessage' : 'Keep Your Eyes Open',
            'feedBackCloserMessage' : 'Move Phone Closer',
            'feedBackCenterMessage' : 'Move Phone Center',
            'feedBackMultipleFaceMessage' : 'Multiple Face Detected',
            'feedBackHeadStraightMessage' : 'Keep Your Head Straight',
            'feedBackBlurFaceMessage' : 'Blur Detected Over Face',
            'feedBackGlareFaceMessage' : 'Glare Detected',
            'setBlurPercentage' : 99,
            'setGlarePercentage_0' : -1,
            'setGlarePercentage_1' : -1,
            'isSaveImage' : true,
            'liveness_url' : 'your liveness url',
            'contentType' : 'form_data',
            'feedBackLowLightMessage' : 'Low light detected',
            'feedbackLowLightTolerence' : 39,
            'feedBackStartMessage' : 'Put your face inside the oval',
            'feedBackLookLeftMessage' : 'Look over your left shoulder',
            'feedBackLookRightMessage' : 'Look over your right shoulder',
            'feedBackOralInfoMessage' : 'Say each digits out loud',
            'feedBackProcessingMessage' : 'Processing...',
            'enableOralVerification' : false,
            'codeTextColor' : 'white',
            'isShowLogo' : true
        }");
        accuraService.StartLiveness(accuraConfigObj.ToString(), configObj.ToString(), appOriantation, new AccuraScanResultCallBack());
    }
}
public class AccuraScanResultCallBack : AccuraServiceCallBack {
    public void InvokeResult(string error, string result) {
        if (error != null) {
            // Error block.
        }
        else {
            // Result from the SDK.
        }
    }
}
```