diff --git a/code/backend_reconnaissance/hand_detector.py b/code/backend_reconnaissance/hand_detector.py
index 8f78b55..929a8c7 100644
--- a/code/backend_reconnaissance/hand_detector.py
+++ b/code/backend_reconnaissance/hand_detector.py
@@ -18,7 +18,7 @@ class HandDetector():
 				min_detection_confidence=0.5,
 				min_tracking_confidence=0.5)
 		#Paramètres
-		self.BUFFER_LENGTH = 30
+		self.BUFFER_LENGTH = 60
 		self.DETECTION_THRESHOLD = 3/4
 
 		self.resultBuffer = []
@@ -31,10 +31,13 @@ class HandDetector():
 			i=0
 			j=0
 			for cpt in range (0,4):
+				V1=[handLandmarks[(4*cpt)+5][0]-handLandmarks[(4*cpt)+0][0],handLandmarks[(4*cpt)+5][1]-handLandmarks[(4*cpt)+0][1]]
+				V2=[handLandmarks[(4*cpt)+8][0]-handLandmarks[(4*cpt)+5][0],handLandmarks[(4*cpt)+8][1]-handLandmarks[(4*cpt)+5][1]]
+				j1=np.dot(V1,V2)
 				V1=[handLandmarks[(4*cpt)+6][0]-handLandmarks[(4*cpt)+5][0],handLandmarks[(4*cpt)+6][1]-handLandmarks[(4*cpt)+5][1]]
 				V2=[handLandmarks[(4*cpt)+8][0]-handLandmarks[(4*cpt)+6][0],handLandmarks[(4*cpt)+8][1]-handLandmarks[(4*cpt)+6][1]]
-				j=np.dot(V1,V2)
-				if (j>0.005):
+				j2=np.dot(V1,V2)
+				if (j1>0 and j2>0):
 					return etatDuPouce[0]      
 			V1=[handLandmarks[4][0]-handLandmarks[1][0],handLandmarks[4][1]-handLandmarks[1][1]]
 			V2=[handLandmarks[2][0]-handLandmarks[1][0],handLandmarks[2][1]-handLandmarks[1][1]]
@@ -67,20 +70,24 @@ class HandDetector():
 					for landmarks in hand_landmarks.landmark:
 						handLandmarks.append([landmarks.x, landmarks.y])
 					#On ajoute la position de chaque mains a une liste
-					handsPositions.append(self.reconnaissancePouce(handLandmarks))
+					handsPositions.append([self.reconnaissancePouce(handLandmarks), handLandmarks])
 				
 				#On calcule le résultat suivant la position des deux mains
 				if(len(handsPositions) == 2):
-					if(handsPositions[0] == handsPositions[1]):
+					if(handsPositions[0][0] == handsPositions[1][0]):
 						thumbState = handsPositions[0]
-					elif(handsPositions[0] == "neutre"):
+						handLandmarks = handsPositions[0][1]
+					elif(handsPositions[0][0] == "neutre"):
 						thumbState = handsPositions[1]
-					elif(handsPositions[1] == "neutre"):
-						thumbState = handsPositions[0]
+						handLandmarks = handsPositions[1][1]
+					elif(handsPositions[1][0] == "neutre"):
+						thumbState = handsPositions[0][0]
+						handLandmarks = handsPositions[0][1]
 					else:
 						thumbState = "neutre"
 				else:
-					thumbState = handsPositions[0]
+					thumbState = handsPositions[0][0]
+					handsLandmarks = handsPositions[0][1]
 
 				self.resultBuffer.append(thumbState)
 				if(len(self.resultBuffer) > self.BUFFER_LENGTH):
@@ -101,3 +108,7 @@ class HandDetector():
 		return False
 
 
+if __name__ == "__main__":
+	h = HandDetector()
+	while(1):
+		print(h.detect())
diff --git a/code/backend_reconnaissance/recording.wav b/code/backend_reconnaissance/recording.wav
index b73dffa..6620e26 100644
Binary files a/code/backend_reconnaissance/recording.wav and b/code/backend_reconnaissance/recording.wav differ