diff --git a/Lesson_203/FullSolution/MainPage.xaml.cs b/Lesson_203/FullSolution/MainPage.xaml.cs
index 4fa446d..6b2cc43 100644
--- a/Lesson_203/FullSolution/MainPage.xaml.cs
+++ b/Lesson_203/FullSolution/MainPage.xaml.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Diagnostics;
 using System.Collections.Generic;
+using System.Net.Http;
 using Windows.UI.Xaml;
 using Windows.UI.Xaml.Controls;
 using Windows.UI.Xaml.Navigation;
@@ -26,6 +27,9 @@ public MainPage()
         protected override async void OnNavigatedTo(NavigationEventArgs navArgs)
         {
             Debug.WriteLine("MainPage::OnNavigatedTo");
+
+            MakePinWebAPICall();
+
             try
             {
                 //Create a new object for our barometric sensor class
@@ -61,5 +65,21 @@ protected override async void OnNavigatedTo(NavigationEventArgs navArgs)
                 Debug.WriteLine(ex.Message);
             }
         }
+
+        /// <summary>
+        // This will put your pin on the world map of makers using this lesson.
+        // Microsoft will receive the IP address of your Raspberry Pi2
+        // this will be used to determine the rough geographic location of the device, in 
+        // latitude and longitude.  This information will be stored for use in generating the
+        // pin map showing the location of people who have also run this sample.
+        // This data will not be shared with any outside party.
+        /// </summary>
+        public void MakePinWebAPICall()
+        {
+            HttpClient client = new HttpClient();
+
+            // Comment this line to opt out of the pin map.
+            client.GetStringAsync("http://adafruitsample.azurewebsites.net/api?Lesson=203");
+        }
     }
 }
diff --git a/Lesson_203/StartSolution/MainPage.xaml.cs b/Lesson_203/StartSolution/MainPage.xaml.cs
index 856b4fb..281417c 100644
--- a/Lesson_203/StartSolution/MainPage.xaml.cs
+++ b/Lesson_203/StartSolution/MainPage.xaml.cs
@@ -26,6 +26,8 @@ public MainPage()
         protected override async void OnNavigatedTo(NavigationEventArgs navArgs)
         {
             Debug.WriteLine("MainPage::OnNavigatedTo");
+
+            MakePinWebAPICall();
             try
             {
                 //Create a new object for our barometric sensor class
@@ -50,5 +52,21 @@ protected override async void OnNavigatedTo(NavigationEventArgs navArgs)
                 Debug.WriteLine(ex.Message);
             }
         }
+
+        /// <summary>
+        // This will put your pin on the world map of makers using this lesson.
+        // Microsoft will receive the IP address of your Raspberry Pi2
+        // this will be used to determine the rough geographic location of the device, in 
+        // latitude and longitude.  This information will be stored for use in generating the
+        // pin map showing the location of people who have also run this sample.
+        // This data will not be shared with any outside party.
+        /// </summary>
+        public void MakePinWebAPICall()
+        {
+            HttpClient client = new HttpClient();
+
+            // Comment this line to opt out of the pin map.
+            client.GetStringAsync("http://adafruitsample.azurewebsites.net/api?Lesson=203");
+        }
     }
 }
diff --git a/Lesson_205/FullSolution/MainPage.xaml.cs b/Lesson_205/FullSolution/MainPage.xaml.cs
index f88453d..bf26595 100644
--- a/Lesson_205/FullSolution/MainPage.xaml.cs
+++ b/Lesson_205/FullSolution/MainPage.xaml.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Diagnostics;
 using System.Threading.Tasks;
+using System.Net.Http;
 using Windows.UI.Xaml.Controls;
 using Windows.UI.Xaml.Navigation;
 using Windows.Devices.Gpio;
@@ -33,6 +34,8 @@ public MainPage()
 
         protected override async void OnNavigatedTo(NavigationEventArgs navArgs)
         {
+            MakePinWebAPICall();
+
             try
             {
                 //Create a new object for the color sensor class
@@ -97,6 +100,22 @@ private async Task SpeakColor(string colorRead)
                 audio.Play();
             });
         }
+
+        /// <summary>
+        // This will put your pin on the world map of makers using this lesson.
+        // Microsoft will receive the IP address of your Raspberry Pi2
+        // this will be used to determine the rough geographic location of the device, in 
+        // latitude and longitude.  This information will be stored for use in generating the
+        // pin map showing the location of people who have also run this sample.
+        // This data will not be shared with any outside party.
+        /// </summary>
+        public void MakePinWebAPICall()
+        {
+            HttpClient client = new HttpClient();
+
+            // Comment this line to opt out of the pin map.
+            client.GetStringAsync("http://adafruitsample.azurewebsites.net/api?Lesson=205");
+        }
     }
 }
 
diff --git a/Lesson_205/StartSolution/MainPage.xaml.cs b/Lesson_205/StartSolution/MainPage.xaml.cs
index f426677..a6b238d 100644
--- a/Lesson_205/StartSolution/MainPage.xaml.cs
+++ b/Lesson_205/StartSolution/MainPage.xaml.cs
@@ -34,6 +34,8 @@ public MainPage()
 
         protected override async void OnNavigatedTo(NavigationEventArgs navArgs)
         {
+            MakePinWebAPICall();
+
             try
             {
                 //Create a new object for the color sensor class
@@ -98,6 +100,22 @@ private async Task SpeakColor(string colorRead)
                
             });
         }
+
+        /// <summary>
+        // This will put your pin on the world map of makers using this lesson.
+        // Microsoft will receive the IP address of your Raspberry Pi2
+        // this will be used to determine the rough geographic location of the device, in 
+        // latitude and longitude.  This information will be stored for use in generating the
+        // pin map showing the location of people who have also run this sample.
+        // This data will not be shared with any outside party.
+        /// </summary>
+        public void MakePinWebAPICall()
+        {
+            HttpClient client = new HttpClient();
+
+            // Comment this line to opt out of the pin map.
+            client.GetStringAsync("http://adafruitsample.azurewebsites.net/api?Lesson=205");
+        }
     }
 }