can you make an rfid gate based attendance system with sms?

Hi Amadeus,

// ASP.NET Core API Controller for RFID Attendance System
[Route("api/[controller]")]
[ApiController]
public class AttendanceController : ControllerBase
{
    [HttpPost]
    public IActionResult PostAttendance([FromBody] string rfidTag)
    {
        // Implement attendance logic here
        return Ok();
    }
}

// Xamarin Forms Code for RFID Attendance System
public partial class MainPage : ContentPage
{
    public MainPage()
    {
        InitializeComponent();
    }

    private async void ScanRFIDButton_Clicked(object sender, EventArgs e)
    {
        // Implement RFID scanning logic here
        string rfidTag = "RFID_TAG_VALUE";

        // Call API to mark attendance
        HttpClient client = new HttpClient();
        var response = await client.PostAsync("https://yourapiurl.com/api/attendance", new StringContent(rfidTag));
        
        if (response.IsSuccessStatusCode)
        {
            // Send SMS notification
            SendSMSNotification();
        }
    }

    private void SendSMSNotification()
    {
        // Implement SMS notification logic here
    }
}