diff --git a/.obsidian/workspace.json b/.obsidian/workspace.json
index 48e294b..d14790b 100644
--- a/.obsidian/workspace.json
+++ b/.obsidian/workspace.json
@@ -195,6 +195,7 @@
   },
   "active": "802d9ec58484849d",
   "lastOpenFiles": [
+    "Pasted image 20250305182542.png",
     "HCIW/slides/Beacon based interfaces.pdf",
     "HCIW/notes/Exercise.md",
     "HCIW/slides/UX for IoT.pdf",
diff --git a/HCIW/notes/Exercise.md b/HCIW/notes/Exercise.md
index b0ab74b..2007261 100644
--- a/HCIW/notes/Exercise.md
+++ b/HCIW/notes/Exercise.md
@@ -17,4 +17,4 @@ Furthermore, we can observe which are the most frequented areas of the shop, the
 #### Context
 can be used in any kind of shop, it's very versatile.
 #### Requirements
-we take advantage of user smartphones and use beacons receivers in the shop.
+we take advantage of user smartphones and use beacons receivers in the shop.
\ No newline at end of file
diff --git a/Pasted image 20250305182542.png b/Pasted image 20250305182542.png
new file mode 100644
index 0000000..f38a8d7
Binary files /dev/null and b/Pasted image 20250305182542.png differ