> For the complete documentation index, see [llms.txt](https://docs.caf.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.caf.io/caf-api/core-api/transaction-details/services/facial-biometrics.md).

# Facial Biometrics

Comparison of the submitted photo with the photo on official bases.

**Section**: `officialData`

**Required parameter:** `cpf`\
**Required files:** `selfie or document image containing a picture`

{% tabs %}
{% tab title="Schema" %}

| Attribute    | Type   | Description                                                     |
| ------------ | ------ | --------------------------------------------------------------- |
| code         | String | Response code                                                   |
| confidence   | Number | Percentage of similarity of document face with official base    |
| probability  | String | Probability of authenticity of document face with official base |
| {% endtab %} |        |                                                                 |

{% tab title="Example" %}

```json
{
  "officialData": {
    "code": "01",
    "confidence": 0.9600528478622437,
    "probability": "Altíssima probabilidade"
  }
}
```

{% endtab %}

{% tab title="Possible Values" %}
**`code`**

| Code | Description                                                                                                               |
| ---- | ------------------------------------------------------------------------------------------------------------------------- |
| `01` | Success (comparison performed). `confidence`, `confidenceStatus` and `probability` are only returned when `code` is `01`. |
| `02` | Required attribute not informed (e.g. missing CPF)                                                                        |
| `03` | Image/source not applicable to the provider (e.g. provider only accepts selfie)                                           |
| `04` | Face not found in the provider's official databases                                                                       |
| `05` | Image quality/size error, or call failure ("face not found")                                                              |
| `06` | Invalid CPF (validated by the provider itself)                                                                            |
| `07` | Generic error / query failure (default value)                                                                             |

**`probability`**

Only returned when `code` is `01`.

| Value (API response)     | Description           |
| ------------------------ | --------------------- |
| Baixíssima probabilidade | Very low probability  |
| Baixa probabilidade      | Low probability       |
| Média probabilidade      | Medium probability    |
| Alta probabilidade       | High probability      |
| Altíssima probabilidade  | Very high probability |
| {% endtab %}             |                       |

{% tab title="Validations Rules" %}

| Rule                            | Description                                                           |
| ------------------------------- | --------------------------------------------------------------------- |
| government\_document\_available | Checks if the document is available in the Government base.           |
| government\_document\_approved  | Verifies the authenticity of the document with the Government's base. |
| liveness\_manual\_revision      | This rule sends the selfie for manual anti-spoofing verification.     |
| {% endtab %}                    |                                                                       |
| {% endtabs %}                   |                                                                       |


---

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