Soem practical constant tweaking.

src/trackers/hand.py

@@ -84,7 +84,7 @@ class HandTracker(GestureTracker):
         self.hands = []
 
         # Maximum distance between two fingers to be assigned to the same hand
-        self.max_finger_distance = 400
+        self.max_finger_distance = 300
 
     def find_hand(self, finger):
         for hand in self.hands: