diff --git a/.obsidian/workspace.json b/.obsidian/workspace.json
index f49372a..394ebb5 100644
--- a/.obsidian/workspace.json
+++ b/.obsidian/workspace.json
@@ -13,12 +13,12 @@
             "state": {
               "type": "markdown",
               "state": {
-                "file": "Biometric Systems/notes/7. Face recognition 3D.md",
+                "file": "Biometric Systems/notes/13. Multi biometric.md",
                 "mode": "source",
                 "source": false
               },
               "icon": "lucide-file",
-              "title": "7. Face recognition 3D"
+              "title": "13. Multi biometric"
             }
           },
           {
@@ -270,6 +270,7 @@
   },
   "active": "1fb39a1dfc7b5200",
   "lastOpenFiles": [
+    "Biometric Systems/notes/7. Face recognition 3D.md",
     "Biometric Systems/notes/6. Face recognition 2D.md",
     "Biometric Systems/notes/9. Ear recognition.md",
     "Biometric Systems/notes/8 Face anti spoofing.md",
@@ -292,7 +293,6 @@
     "Biometric Systems/slides/LEZIONE8_Face antispoofing.pdf",
     "Biometric Systems/slides/LEZIONE11_Fingerprints.pdf",
     "Biometric Systems/notes/13. Multi biometric.md",
-    "Biometric Systems/notes/7. Face recognition 3D.md",
     "Biometric Systems/notes/4. Face detection.md",
     "Foundation of data science/notes/3.1 Multi Class Logistic Regression.md",
     "Foundation of data science/notes/3.2 LLM generated from notes.md",
diff --git a/Biometric Systems/notes/7. Face recognition 3D.md b/Biometric Systems/notes/7. Face recognition 3D.md
index b9e8953..0e08c31 100644
--- a/Biometric Systems/notes/7. Face recognition 3D.md	
+++ b/Biometric Systems/notes/7. Face recognition 3D.md	
@@ -8,7 +8,7 @@ Questi problemi possono essere risolti con il riconoscimento 3D, introducendo pe
 | Espressione            | X   | X   |
 | Invecchiamento         | X   | X   |
 | Makeup                 | X   | V   |
-| Chirurgia plastica     | X   | V   |
+| Chirurgia plastica     | X   | X   |
 | Occhiali, sciarpe ecc. | X   | X   |
 (X = la variazione è un problema, V = la variazione non causa problemi)