> For the complete documentation index, see [llms.txt](https://docs.facephi.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.facephi.com/docs.facephi-en/products/editor-1/facephi-onboarding/mobile/android/widgets/nfc.md).

# NFC

**Widget NFC**

### **Introduction**[​](#introducción) <a href="#introduccion" id="introduccion"></a>

The NFC widget is a data-reading solution using NFC technology (*Near-field communication* or near-field communication), which allows you to capture and validate the user's document.

As a result, the document's authenticity is verified through algorithms and security protocols. All extracted data can be consulted at any time from Facephi Platform.

### **Requirements and installation**[​](#requisitos-e-instalación) <a href="#requisitos-e-instalacion" id="requisitos-e-instalacion"></a>

The NFC widget is compatible with Android 6 devices or later.

### **Scan NFC**[​](#escanear-nfc) <a href="#escanear-nfc" id="escanear-nfc"></a>

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The first screen is a tutorial that explains how to scan the NFC chip.

The animation shows how to interact with the widget. The text gives details on how to perform this step correctly.

To go back, tap icon (1). To view a tutorial or more information about this step, tap button (2). To continue, tap button (3).

1. Back button
2. NFC tutorials button
3. Continue button
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If we have tapped the button to learn more about NFC, this tutorial screen will appear.

To exit, tap icon (1) or button (2).

1. Back button
2. Continue button
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Once NFC capture has started, a text appears giving instructions on what to do for a correct reading.

To cancel the process, tap button (1) or button (2).

1. Button to cancel the process
2. Close button
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When the document is in the correct position relative to the device, data transfer will begin. Keep that position until the transfer ends.

To cancel the process, tap button (1) or button (2).

1. Button to cancel the process
2. Close button
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In case of an error, it will be reported through this screen.
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### **Errors**[​](#errores) <a href="#errores" id="errores"></a>

#### **Timeout exceeded**[​](#tiempo-superado) <a href="#tiempo-superado" id="tiempo-superado"></a>

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This diagnostic is shown when you have started the widget, but the document was already near the device before you tapped Start. The steps to follow for a correct reading are:

* Keep the **device and the Identity document apart**.
* Press the button **Start.**
* **Now bring together** the Identity document to the back of the device.

Retry this step (2) following the instructions on screen, or by tapping the information icon (if there is one) to get tips.

1. Close button
2. Retry button
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#### **Internet connection**[​](#conexión-a-internet) <a href="#conexion-a-internet" id="conexion-a-internet"></a>

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There was an error with your internet connection.

By pressing the button (2), you return to the Widget to retry the previous step. If you want to go back, press the icon (1).

1. Close button
2. Retry button
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#### **Update the application**[​](#actualizar-la-aplicación) <a href="#actualizar-la-aplicacion" id="actualizar-la-aplicacion"></a>

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A new version of the application is available, and it needs to be updated. Usually, for bug fixes or feature improvements.

Tapping button (2) will take you to the download page to update the app. Otherwise, to close this error screen tap icon (1).

1. Close button
2. Retry button
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#### **Several chips**[​](#varios-chips) <a href="#varios-chips" id="varios-chips"></a>

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This error appears when, in addition to NFC, it is detecting other chips nearby. This may be due to:

* The document is together with other documents: move the selected document away from the rest of the documents for the onboarding.

Retry this step following the instructions on screen, or by tapping the information icon (if any) to receive tips.

1. Close button
2. Retry button
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#### **Problems reading the document**[​](#problemas-al-leer-el-documento) <a href="#problemas-al-leer-el-documento" id="problemas-al-leer-el-documento"></a>

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The device sensor does not detect NFC. This may be due to:

* The document is too far from the device. We recommend bringing the document and device together so they make contact.
* The document and the device are together, but it is not detected: move them slightly against each other until the device detects the document. Depending on the device brand, the sensor is located in a different area. For this reason, we recommend placing the document against the back of the device and moving it around until you find the internal sensor.

Retry this step following the instructions on screen, or by tapping the information icon (if any) to receive tips.

1. Close button
2. Retry button
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This error appears when data transfer via NFC has started, but the connection was lost during the transfer. This may be due to:

* The device or document moved while the transfer was taking place. When it starts loading, keep that position until it finishes.

Retry this step following the instructions on screen, or by tapping the information icon (if any) to receive tips.

1. Close button
2. Retry button
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