diff --git a/main.py b/main.py
index 5f41fa2..7bd888b 100755
--- a/main.py
+++ b/main.py
@@ -1,10 +1,11 @@
 import os.path
 import datetime
-import subprocess
+import pickle
 
 import tkinter as tk
 import cv2
 from PIL import Image, ImageTk
+import face_recognition
 
 import util
 
@@ -52,12 +53,8 @@ def process_webcam(self):
         self._label.after(20, self.process_webcam)
 
     def login(self):
-        unknown_img_path = './.tmp.jpg'
 
-        cv2.imwrite(unknown_img_path, self.most_recent_capture_arr)
-
-        output = str(subprocess.check_output(['face_recognition', self.db_dir, unknown_img_path]))
-        name = output.split(',')[1][:-3]
+        name = util.recognize(self.most_recent_capture_arr, self.db_dir)
 
         if name in ['unknown_person', 'no_persons_found']:
             util.msg_box('Ups...', 'Unknown user. Please register new user or try again.')
@@ -67,8 +64,6 @@ def login(self):
                 f.write('{},{}\n'.format(name, datetime.datetime.now()))
                 f.close()
 
-        os.remove(unknown_img_path)
-
     def register_new_user(self):
         self.register_new_user_window = tk.Toplevel(self.main_window)
         self.register_new_user_window.geometry("1200x520+370+120")
@@ -106,7 +101,10 @@ def start(self):
     def accept_register_new_user(self):
         name = self.entry_text_register_new_user.get(1.0, "end-1c")
 
-        cv2.imwrite(os.path.join(self.db_dir, '{}.jpg'.format(name)), self.register_new_user_capture)
+        embeddings = face_recognition.face_encodings(self.register_new_user_capture)[0]
+
+        file = open(os.path.join(self.db_dir, '{}.pickle'.format(name)), 'wb')
+        pickle.dump(embeddings, file)
 
         util.msg_box('Success!', 'User was registered successfully !')
 
diff --git a/util.py b/util.py
index d7086d1..f9a9248 100755
--- a/util.py
+++ b/util.py
@@ -1,5 +1,9 @@
+import os
+import pickle
+
 import tkinter as tk
 from tkinter import messagebox
+import face_recognition
 
 
 def get_button(window, text, color, command, fg='white'):
@@ -40,3 +44,32 @@ def get_entry_text(window):
 
 def msg_box(title, description):
     messagebox.showinfo(title, description)
+
+
+def recognize(img, db_path):
+    # it is assumed there will be at most 1 match in the db
+
+    embeddings_unknown = face_recognition.face_encodings(img)
+    if len(embeddings_unknown) == 0:
+        return 'no_persons_found'
+    else:
+        embeddings_unknown = embeddings_unknown[0]
+
+    db_dir = sorted(os.listdir(db_path))
+
+    match = False
+    j = 0
+    while not match and j < len(db_dir):
+        path_ = os.path.join(db_path, db_dir[j])
+
+        file = open(path_, 'rb')
+        embeddings = pickle.load(file)
+
+        match = face_recognition.compare_faces([embeddings], embeddings_unknown)[0]
+        j += 1
+
+    if match:
+        return db_dir[j - 1][:-7]
+    else:
+        return 'unknown_person'
+