diff --git a/sk_demo/src/Rig.cs b/sk_demo/src/Rig.cs
index 6d9d9b4..6123aac 100644
--- a/sk_demo/src/Rig.cs
+++ b/sk_demo/src/Rig.cs
@@ -11,6 +11,8 @@ public class Rig
 
     public Vec3 perch_pos = Vec3.Zero;
 
+    public Btn home_btn = new();
+
     public void Init()
     {
 
@@ -26,13 +28,20 @@ public class Rig
         view_pos = head_pos + V.XYZ(0, -6 * U.cm, 0);
 
 
-
         // Position is specifically defined as the middle of the middle finger's root (metacarpal) bone.
         palm_pos = hand_1.palm.position;
         // For orientation, Forward is the direction the flat of the palm is facing, "Iron Man" style. X+ is to the outside of the right hand, and to the inside of the left hand.
         palm_ori = hand_1.palm.orientation;
 
         perch_pos = palm_pos + Vec3.Up * 8 * U.cm;
+
+        float index_flexion = Flexion(hand_1, FingerId.Index);
+        home_btn.Frame(index_flexion < 0.13f, index_flexion > 0.6);
+        // Text.Add(
+        //     index_flexion.ToString("F2"),
+        //     Matrix.TR(perch_pos, head_ori * Quat.FromAngles(0, 180, 0)),
+        //     (home_btn.held ? Color.White : Color.Black)
+        // );
     }
 
     public struct Btn