# 2.2 NFC Function - Mobile Scans

**NFC (Near Field Communication)** is a short-range wireless communication technology that allows devices to exchange data when they are close to each other, typically within a range of about 4 cm. Here's how it works:

**Basic Principles:**

- **Short-range communication:** NFC devices, such as smartphones, card readers, or NFC tags, must be very close to each other to initiate data exchange.
- **Frequency:** NFC operates at 13.56 MHz, a frequency that allows for fast and secure information exchange over short distances.
- **Active and Passive Modes:**
    - In **active mode**, both devices generate an electromagnetic field to transmit data.
    - In **passive mode**, only one device generates the electromagnetic field (e.g., a smartphone), while the other device (e.g., an NFC tag) uses it to power itself and respond.

---

**How NFC works in vtenext**

---

To activate and use this feature, a few configuration steps are required. First, from vtenext's administration panel, go to **SETTINGS > MODULE MANAGER > COMPANIES** (or another relevant module), and add a related field to the **Mobile Scans** module.

[![image.png](https://usermanual.vtenext.com/uploads/images/gallery/2024-10/scaled-1680-/Skvimage.png)](https://usermanual.vtenext.com/uploads/images/gallery/2024-10/Skvimage.png)

This field will be immediately available on the **Wilson App**, and by clicking on it, the screen to scan the NFC tag with the mobile phone will be activated.

[![image.png](https://usermanual.vtenext.com/uploads/images/gallery/2024-10/scaled-1680-/8Giimage.png)](https://usermanual.vtenext.com/uploads/images/gallery/2024-10/8Giimage.png)  
*NFC scan field on the **Wilson App** to click on in order to activate the NFC tag acquisition.*

[![image.png](https://usermanual.vtenext.com/uploads/images/gallery/2024-10/scaled-1680-/EoCimage.png)](https://usermanual.vtenext.com/uploads/images/gallery/2024-10/EoCimage.png)

*NFC tag scanning startup screen*

[![image.png](https://usermanual.vtenext.com/uploads/images/gallery/2024-10/scaled-1680-/eyximage.png)](https://usermanual.vtenext.com/uploads/images/gallery/2024-10/eyximage.png)

*Screen dialog where the system prompts the user to bring the NFC tag closer for reading*

[![image.png](https://usermanual.vtenext.com/uploads/images/gallery/2024-10/scaled-1680-/Yf7image.png)](https://usermanual.vtenext.com/uploads/images/gallery/2024-10/Yf7image.png)

*The tag is captured, and a record is also written in the related field that was previously created*

[![image.png](https://usermanual.vtenext.com/uploads/images/gallery/2024-10/scaled-1680-/30Iimage.png)](https://usermanual.vtenext.com/uploads/images/gallery/2024-10/30Iimage.png)

*Here is the record as it appears in the related field after being scanned*

[![image.png](https://usermanual.vtenext.com/uploads/images/gallery/2024-10/scaled-1680-/dhYimage.png)](https://usermanual.vtenext.com/uploads/images/gallery/2024-10/dhYimage.png)

*Here is the scanned record in detail (Mobile Scan card as seen from the Wilson App)*

[![image.png](https://usermanual.vtenext.com/uploads/images/gallery/2024-10/scaled-1680-/cn6image.png)](https://usermanual.vtenext.com/uploads/images/gallery/2024-10/cn6image.png)

*Here is the scanned record in detail (Mobile Scan card as viewed from the vtenext web side)*

**Note: The NFC function is also available in the Processes module, allowing a process to be initiated from a scan.**