diff --git a/python2/homesfr.py b/python2/homesfr.py
index 6717927..9ebd0a0 100644
--- a/python2/homesfr.py
+++ b/python2/homesfr.py
@@ -34,6 +34,7 @@ REMOTE_CONTROLER = 'REMOTE'
 KEYPAD_CONTROLER = 'KEYPAD'
 PRESENCE_CAMERA_DETECTOR = 'PIR_CAMERA'
 
+# This part of code must be the one to adapt to make work the underneath part
 from cookielib import CookieJar
 import urllib2 as request
 from urllib2 import HTTPError
@@ -41,28 +42,119 @@ from urllib import urlencode
 from xml.etree import ElementTree as ET
 from datetime import datetime
 
-def bytes2file (b):
+# Python2 and 3 adaptations
+# BEGIN
+def str2bytes (s):
 	'''
-	Gives a file-like class from a Bytes
+	Bind to the bytes build-in function
 	'''
-	from io import BytesIO
-	r = BytesIO ()
-	r.write (b)
-	r.seek (0)
-	return (r)
+	return (bytes (s))
+# END
 
-def bytes2image (b):
-	'''
-	Gives a Image object from bytes
-	Uses the bytes2file function
-	'''
-	from PIL import Image
-	f = bytes2file (b)
-	r = Image ()
-	r.open (f)
-	return (r)
+# The next must stay a copy from the python3 library, starting from class Common
 
-class HomeSFR ():
+class Common ():
+	'''
+	Common ressources to the library's classes
+	'''
+	
+	def __init__ (self):
+		
+		# Specific configuration
+		
+		self.base_url = 'https://home.sfr.fr'
+		
+		# path to login test
+		self.auth_path = '/mysensors'
+		self.auth_ok = '/accueil'	# if logged
+		self.auth_post_url = 'https://boutique.home.sfr.fr/authentification'
+		self.auth_referer = 'https://boutique.home.sfr.fr/authentification?back=service'
+		self.auth_user_field = 'email'
+		self.auth_pass_field = 'passwd'
+		self.auth_extra_fields = {'back': 'service', 'token_sso': '', 'error_sso': '', 'SubmitLogin': 'OK'}
+		self.auth_logout_path = '/deconnexion'
+		
+		# Path to sensors and mode
+		self.sensors_list = '/mysensors'
+		
+		# Path to list of alerts
+		self.alerts_path = '/listalert'
+		
+		# Path to get and set modes
+		self.mode_get_path = '/mysensors'
+		self.mode_get_label = 'alarm_mode'
+		self.mode_set_path = '/alarmmode'
+		self.mode_set_field = 'action'	# Name for GET field
+		self.mode_off = 'OFF'		# Value for off
+		self.mode_custom = 'CUSTOM'	# Value for custom
+		self.mode_on = 'ON'		# Value for on
+		
+		# Cameras
+		self.cameras_list = '/homescope/mycams'
+		self.camera_snapshot = '/homescope/snapshot'
+		self.camera_snapshot_mac = 'mac'
+		self.camera_video = '/homescope/flv'
+		self.camera_vide_mac = 'mac'
+		self.camera_recordings_list = '/listenr'
+		self.camera_recordings_delete = '/delenr'
+		self.camera_recordings_start = '/homescope/record'
+		self.camera_recordings_stop = '/homescope/stoprecord'
+		self.camera_recordings_mac = 'mac'
+		self.camera_get_config_path = '/homescope/camsettings'
+		self.camera_get_config_mac = 'mac'
+		self.camera_get_config_flip = 'FLIP'
+		self.camera_get_config_leds = 'LEDMODE' # set to 0 to turn the leds on
+		self.camera_get_config_detectionsensibility = 'DP' # from 1 to 4
+		self.camera_get_config_recording = 'REC24'
+		self.camera_get_config_name = 'NAME'
+		self.camera_set_config_path = '/homescope/camsettings'
+		self.camera_set_config_mac = 'mac'
+		self.camera_set_config_flip = 'flip'
+		self.camera_set_config_leds = 'led_mode' # set to 0 to turn the leds on
+		self.camera_set_config_detectionsensibility = 'dp' # from 1 to 4
+		self.camera_set_config_recording = 'rec24'
+		self.camera_set_config_name = 'name'
+		
+		# Sensors
+		self.sensors_list = '/mysensors'
+		self.sensors_label = 'Sensor'
+		self.sensors_label_id = 'id'
+		self.sensors_mac_field = 'deviceMac'
+		self.sensors_type_field = 'deviceType'
+		self.sensors_model_field = 'deviceModel'
+		self.sensors_version_field = 'deviceVersion'
+		self.sensors_name_field = 'name'
+		self.sensors_longname_field = 'long_name'
+		self.sensors_namegender_field = 'name_gender' # Only usefull for French for the moment
+		self.sensors_batterylevel_field = 'batteryLevel'
+		self.sensors_signal_field = 'signalLevel'
+		self.sensors_lasttrigger_field = 'lastTriggerTime'
+		self.sensors_lasttrigger_dateformat = '%Y-%m-%d %H:%M:%S'
+		self.sensors_status_field = 'status'
+		self.sensors_status_value_ok = 'OK'
+		# I don't have any other value for the moment
+
+	def bytes2file (self, b):
+		'''
+		Gives a file-like class from a Bytes
+		'''
+		from io import BytesIO
+		r = BytesIO ()
+		r.write (b)
+		r.seek (0)
+		return (r)
+
+	def bytes2image (self, b):
+		'''
+		Gives a Image object from bytes
+		Uses the bytes2file function
+		'''
+		from PIL import Image
+		f = self.bytes2file (b)
+		r = Image.open (f)
+		return (r)
+
+class HomeSFR (Common):
 	def __init__ (self, username = None, password = None, cookies = None, debug = False, autologin = True):
 		'''
 		Sets the class with username and password couple, or cookies
@@ -71,6 +163,7 @@ class HomeSFR ():
 		The autologin parameter defines if the class will manage the login by itself, if False, the user must call login () to login and test_login () to check the login
 		The autologin paramater will always be False if no username and password are defined, and the login () method will always return False
 		'''
+		Common.__init__ (self)
 		self.DEBUG = debug
 		if self.DEBUG:
 			print (name + ' ' + version)
@@ -97,49 +190,7 @@ class HomeSFR ():
 		else:
 			self.cookies = cookies
 		self.opener = request.build_opener (request.HTTPCookieProcessor (self.cookies))
-		
-		# Specific configuration
-		self.base_url = 'https://home.sfr.fr'
-		
-		# path to login test
-		self.auth_path = '/mysensors'
-		self.auth_ok = '/accueil'	# if logged
-		self.auth_post_url = 'https://boutique.home.sfr.fr/authentification'
-		self.auth_referer = 'https://boutique.home.sfr.fr/authentification?back=service'
-		self.auth_user_field = 'email'
-		self.auth_pass_field = 'passwd'
-		self.auth_extra_fields = {'back': 'service', 'token_sso': '', 'error_sso': '', 'SubmitLogin': 'OK'}
-		self.auth_logout_path = '/deconnexion'
-		
-		# Path to sensors and mode
-		self.sensors_list = '/mysensors'
-		self.sensors_label = 'Sensor'
-		self.sensors_label_id = 'id'
-		
-		# Path to list of alerts
-		self.alerts_path = '/listalert'
-		
-		# Path to get and set modes
-		self.mode_get_path = '/mysensors'
-		self.mode_get_label = 'alarm_mode'
-		self.mode_set_path = '/alarmmode'
-		self.mode_set_field = 'action'	# Name for GET field
-		self.mode_off = 'OFF'		# Value for off
-		self.mode_custom = 'CUSTOM'	# Value for custom
-		self.mode_on = 'ON'		# Value for on
-		
-		# Cameras
-		# mac=00:0e:8f:c9:59:44&flip=0&led_mode=0&alert_pan=1&rec24=0&da=1&dp=4&name=Salon
-		self.cameras_list = '/homescope/mycams'
-		self.camera_snapshot = '/homescope/snapshot'
-		self.camera_video = '/homescope/flv'
-		self.camera_get_config_path = '/homescope/camsettings'
-		self.camera_set_config_path = '/homescope/camsettings'
-		self.camera_set_config_mac = 'mac'
-		self.camera_set_config_flip = 'flip'
-		self.camera_set_config_leds = 'led_mode' # set to 0 to turn the leds on
-		self.camera_set_config_detectionsensibility = 'dp' # from 1 to 4,
-		
+	
 	def __str__ (self):
 		'''
 		Shows name, version, defined user and debug state
@@ -178,7 +229,7 @@ class HomeSFR ():
 			data = self.auth_extra_fields
 			data [self.auth_user_field] = self.username
 			data [self.auth_pass_field] = self.password
-			data = bytes (urlencode (data))
+			data = str2bytes (urlencode (data))
 			if self.DEBUG:
 				print ('Cookies ' + str( len(self.cookies)))
 				print ('Sending data ' + str (data))
@@ -243,7 +294,7 @@ class HomeSFR ():
 		r = self.base_url + self.mode_get_path
 		if self.DEBUG:
 			print ('Getting ' + r)
-		a = bytes2file (self.opener.open (r).read ())
+		a = self.bytes2file (self.opener.open (r).read ())
 		b = ET.parse (a).getroot ()
 		c = b.get (self.mode_get_label)
 		if self.DEBUG:
@@ -263,7 +314,7 @@ class HomeSFR ():
 		if (self.autologin and self.test_login () == False):
 			self.login ()
 		r = self.base_url + self.sensors_list
-		a = bytes2file (self.opener.open (r).read ())
+		a = self.bytes2file (self.opener.open (r).read ())
 		b = ET.parse (a)
 		r = []
 		for i in b.findall (self.sensors_label):
@@ -275,29 +326,11 @@ class HomeSFR ():
 		Returns a Sensor object for the sensor id or None if sensor is not found
 		The available ids can be got from the list_sensors method
 		'''
-		def build_tree (element):
-			r = {}
-			if self.DEBUG:
-				print ('Diving in the element ' + element.tag)
-			for i in element.getchildren ():
-				if i.getchildren () == []:
-					r.update ({i.tag: i.text})
-				else:
-					r.update ({i.tag: build_tree (i)})
-			return (r)
 		if (self.autologin and self.test_login () == False):
 			self.login ()
-		r = self.base_url + self.sensors_list
-		a = bytes2file (self.opener.open (r).read ())
-		b = ET.parse (a)
-		r = None
-		for i in b.findall (self.sensors_label):
-			if self.DEBUG:
-				print ('Testing sensors ' + i.get (self.sensors_label_id))
-			if (i.get (self.sensors_label_id) == id):
-				r = build_tree (i)
-				break
-		return (Sensor (r))
+		r = Sensor (id, self.opener)
+		r.refresh ()
+		return (r)
 	
 	def get_all_sensors (self):
 		'''
@@ -307,32 +340,52 @@ class HomeSFR ():
 		for i in self.list_sensors ():
 			r.append (self.get_sensor (i))
 		return (tuple (r))
+	
+	def get_camera (self, id):
+		'''
+		Get a Camera object from the sensor's id
+		'''
+		if (self.autologin and self.test_login () == False):
+			self.login ()
+		r = Camera (id, self.opener)
+		r.refresh ()
+		return (r)
 
-class Sensor:
+class Sensor (Common):
 	'''
 	Class used to read easily the sensors
 	'''
-	def __init__ (self, sensor_dict):
+	def __init__ (self, id, opener):
 		'''
 		Initialize the class with the dict producted by HomeSFR.get_sensors ()
 		'''
+		Common.__init__ (self)
 		
-		self.sensor_dict = sensor_dict
-		
-		# Field names
-		self.type_field = 'deviceType'
-		self.model_field = 'deviceModel'
-		self.version_field = 'deviceVersion'
-		self.name_field = 'name'
-		self.longname_field = 'long_name'
-		self.namegender_field = 'name_gender' # Only usefull for French for the moment
-		self.batterylevel_field = 'batteryLevel'
-		self.signal_field = 'signalLevel'
-		self.lasttrigger_field = 'lastTriggerTime'
-		self.lasttrigger_dateformat = '%Y-%m-%d %H:%M:%S'
-		self.status_field = 'status'
-		self.status_value_ok = 'OK'
-		# I don't have any other value for the moment
+		self.id = id
+		self.sensor_dict = None
+		self.opener = opener
+	
+	def refresh (self):
+		'''
+		Gets or refresh the data for the sensor
+		'''
+		def build_tree (element):
+			r = {}
+			for i in element.getchildren ():
+				if i.getchildren () == []:
+					r.update ({i.tag: i.text})
+				else:
+					r.update ({i.tag: build_tree (i)})
+			return (r)
+		r = self.base_url + self.sensors_list
+		a = self.bytes2file (self.opener.open (r).read ())
+		a.seek (0)
+		b = ET.parse (a)
+		self.sensor_dict = None
+		for i in b.findall (self.sensors_label):
+			if (i.get (self.sensors_label_id) == self.id):
+				self.sensor_dict = build_tree (i)
+				break
 	
 	def get_raw (self):
 		'''
@@ -340,72 +393,97 @@ class Sensor:
 		'''
 		return (self.sensor_dict)
 	
+	def get_mac (self):
+		'''
+		Returns the sensor's model, if any, None either
+		'''
+		return (self.sensor_dict [self.sensors_mac_field])
+	
 	def get_type (self):
 		'''
 		Returns the sensor's type
 		'''
-		return (self.sensor_dict [self.type_field])
+		return (self.sensor_dict [self.sensors_type_field])
 	
 	def get_model (self):
 		'''
 		Returns the sensor's model, if any, None either
 		'''
-		return (self.sensor_dict [self.model_field])
+		return (self.sensor_dict [self.sensors_model_field])
 	
 	def get_version (self):
 		'''
 		Returns the sensor's version
 		'''
-		return (self.sensor_dict [self.version_field])
+		return (self.sensor_dict [self.sensors_version_field])
 	
 	def get_name (self):
 		'''
 		Returns the sensor's name
 		'''
-		return (self.sensor_dict [self.name_field])
+		return (self.sensor_dict [self.sensors_name_field])
 	
 	def get_longname (self):
 		'''
 		Returns the sensor's type name in system's language and the sensor's name
 		'''
-		return (self.sensor_dict [self.longname_field])
+		return (self.sensor_dict [self.sensors_longname_field])
 	
 	def get_namegender (self):
 		'''
 		Return M for male and F for female.
 		Only usefull for languages with gender on nouns
 		'''
-		return (self.sensor_dict [self.namegender_field])
+		return (self.sensor_dict [self.sensors_namegender_field])
 	
 	def get_batterylevel (self):
 		'''
 		Returns the sensor's battery level, out of 10
 		It seems that batteryless sensors return 255
 		'''
-		return (int (self.sensor_dict [self.batterylevel_field]))
+		return (int (self.sensor_dict [self.sensors_batterylevel_field]))
 	
 	def get_signal (self):
 		'''
 		Returns the sensor's signal quality, out of 10
 		'''
-		return (int (self.sensor_dict [self.signal_field]))
+		return (int (self.sensor_dict [self.sensors_signal_field]))
 	
 	def get_lasttrigger (self):
 		'''
 		Return the timestamp of the sensor's last triger
 		The sensors always trigger, even when the alarm's mode is off
 		'''
-		a = self.sensor_dict [self.lasttrigger_field]
+		a = self.sensor_dict [self.sensors_lasttrigger_field]
 		# Try because camera return the date '0000-00-00 00:00:00' that is ununderstandable
 		try:
-			b = datetime.strptime (a, self.lasttrigger_dateformat)
+			b = datetime.strptime (a, self.sensors_lasttrigger_dateformat)
 		except ValueError:
 			return (0)
-		r = int (b.strftime ('%s'))
+		r = int (b.timestamp ())
 		return (r)
 	
 	def get_status (self):
 		'''
 		Returns True is the sensor is OK, False either
 		'''
-		return (self.sensor_dict [self.status_field] == self.status_value_ok)
\ No newline at end of file
+		return (self.sensor_dict [self.sensors_status_field] == self.sensors_status_value_ok)
+
+class Camera (Sensor):
+	'''
+	Class used to manipulate easily cameras
+	'''
+	def __init__ (self, sensor_dict, opener):
+		'''
+		Initialize the class with the dict producted by HomeSFR.get_camera ()
+		'''
+		Sensor.__init__ (self, sensor_dict, opener)
+	
+	def get_snapshot (self):
+		'''
+		Get a snapshot from the camera
+		Return a PIL.Image object
+		'''
+		r = self.base_url + self.camera_snapshot + '?' + self.camera_snapshot_mac + '=' + self.get_mac ()
+		a = self.bytes2image (self.opener.open (r).read ())
+		return (a)
\ No newline at end of file
diff --git a/python3/homesfr.py b/python3/homesfr.py
index f0153e8..dae9e99 100644
--- a/python3/homesfr.py
+++ b/python3/homesfr.py
@@ -7,6 +7,7 @@ This is a wrap aroud website, this could stop working without prior notice
 '''
 
 # TODO:
+## Put common ressources in the Common class
 ## Manage cameras
 ### Get image
 ### Get video
@@ -39,28 +40,117 @@ from xml.etree import ElementTree as ET
 from urllib.error import HTTPError
 from datetime import datetime
 
-def bytes2file (b):
+# Python2 and 3 adaptations
+# BEGIN
+def str2bytes (s):
 	'''
-	Gives a file-like class from a Bytes
+	Bind to the bytes build-in function
 	'''
-	from io import BytesIO
-	r = BytesIO ()
-	r.write (b)
-	r.seek (0)
-	return (r)
+	return (bytes (s, 'UTF8'))
+# END
 
-def bytes2image (b):
+class Common ():
 	'''
-	Gives a Image object from bytes
-	Uses the bytes2file function
+	Common ressources to the library's classes
 	'''
-	from PIL import Image
-	f = bytes2file (b)
-	r = Image ()
-	r.open (f)
-	return (r)
+	
+	def __init__ (self):
+		
+		# Specific configuration
+		
+		self.base_url = 'https://home.sfr.fr'
+		
+		# path to login test
+		self.auth_path = '/mysensors'
+		self.auth_ok = '/accueil'	# if logged
+		self.auth_post_url = 'https://boutique.home.sfr.fr/authentification'
+		self.auth_referer = 'https://boutique.home.sfr.fr/authentification?back=service'
+		self.auth_user_field = 'email'
+		self.auth_pass_field = 'passwd'
+		self.auth_extra_fields = {'back': 'service', 'token_sso': '', 'error_sso': '', 'SubmitLogin': 'OK'}
+		self.auth_logout_path = '/deconnexion'
+		
+		# Path to sensors and mode
+		self.sensors_list = '/mysensors'
+		
+		# Path to list of alerts
+		self.alerts_path = '/listalert'
+		
+		# Path to get and set modes
+		self.mode_get_path = '/mysensors'
+		self.mode_get_label = 'alarm_mode'
+		self.mode_set_path = '/alarmmode'
+		self.mode_set_field = 'action'	# Name for GET field
+		self.mode_off = 'OFF'		# Value for off
+		self.mode_custom = 'CUSTOM'	# Value for custom
+		self.mode_on = 'ON'		# Value for on
+		
+		# Cameras
+		self.cameras_list = '/homescope/mycams'
+		self.camera_snapshot = '/homescope/snapshot'
+		self.camera_snapshot_mac = 'mac'
+		self.camera_video = '/homescope/flv'
+		self.camera_vide_mac = 'mac'
+		self.camera_recordings_list = '/listenr'
+		self.camera_recordings_delete = '/delenr'
+		self.camera_recordings_start = '/homescope/record'
+		self.camera_recordings_stop = '/homescope/stoprecord'
+		self.camera_recordings_mac = 'mac'
+		self.camera_get_config_path = '/homescope/camsettings'
+		self.camera_get_config_mac = 'mac'
+		self.camera_get_config_flip = 'FLIP'
+		self.camera_get_config_leds = 'LEDMODE' # set to 0 to turn the leds on
+		self.camera_get_config_detectionsensibility = 'DP' # from 1 to 4
+		self.camera_get_config_recording = 'REC24'
+		self.camera_get_config_name = 'NAME'
+		self.camera_set_config_path = '/homescope/camsettings'
+		self.camera_set_config_mac = 'mac'
+		self.camera_set_config_flip = 'flip'
+		self.camera_set_config_leds = 'led_mode' # set to 0 to turn the leds on
+		self.camera_set_config_detectionsensibility = 'dp' # from 1 to 4
+		self.camera_set_config_recording = 'rec24'
+		self.camera_set_config_name = 'name'
+		
+		# Sensors
+		self.sensors_list = '/mysensors'
+		self.sensors_label = 'Sensor'
+		self.sensors_label_id = 'id'
+		self.sensors_mac_field = 'deviceMac'
+		self.sensors_type_field = 'deviceType'
+		self.sensors_model_field = 'deviceModel'
+		self.sensors_version_field = 'deviceVersion'
+		self.sensors_name_field = 'name'
+		self.sensors_longname_field = 'long_name'
+		self.sensors_namegender_field = 'name_gender' # Only usefull for French for the moment
+		self.sensors_batterylevel_field = 'batteryLevel'
+		self.sensors_signal_field = 'signalLevel'
+		self.sensors_lasttrigger_field = 'lastTriggerTime'
+		self.sensors_lasttrigger_dateformat = '%Y-%m-%d %H:%M:%S'
+		self.sensors_status_field = 'status'
+		self.sensors_status_value_ok = 'OK'
+		# I don't have any other value for the moment
 
-class HomeSFR ():
+	def bytes2file (self, b):
+		'''
+		Gives a file-like class from a Bytes
+		'''
+		from io import BytesIO
+		r = BytesIO ()
+		r.write (b)
+		r.seek (0)
+		return (r)
+
+	def bytes2image (self, b):
+		'''
+		Gives a Image object from bytes
+		Uses the bytes2file function
+		'''
+		from PIL import Image
+		f = self.bytes2file (b)
+		r = Image.open (f)
+		return (r)
+
+class HomeSFR (Common):
 	def __init__ (self, username = None, password = None, cookies = None, debug = False, autologin = True):
 		'''
 		Sets the class with username and password couple, or cookies
@@ -69,6 +159,7 @@ class HomeSFR ():
 		The autologin parameter defines if the class will manage the login by itself, if False, the user must call login () to login and test_login () to check the login
 		The autologin paramater will always be False if no username and password are defined, and the login () method will always return False
 		'''
+		Common.__init__ (self)
 		self.DEBUG = debug
 		if self.DEBUG:
 			print (name + ' ' + version)
@@ -95,48 +186,6 @@ class HomeSFR ():
 		else:
 			self.cookies = cookies
 		self.opener = request.build_opener (request.HTTPCookieProcessor (self.cookies))
-		
-		# Specific configuration
-		self.base_url = 'https://home.sfr.fr'
-		
-		# path to login test
-		self.auth_path = '/mysensors'
-		self.auth_ok = '/accueil'	# if logged
-		self.auth_post_url = 'https://boutique.home.sfr.fr/authentification'
-		self.auth_referer = 'https://boutique.home.sfr.fr/authentification?back=service'
-		self.auth_user_field = 'email'
-		self.auth_pass_field = 'passwd'
-		self.auth_extra_fields = {'back': 'service', 'token_sso': '', 'error_sso': '', 'SubmitLogin': 'OK'}
-		self.auth_logout_path = '/deconnexion'
-		
-		# Path to sensors and mode
-		self.sensors_list = '/mysensors'
-		self.sensors_label = 'Sensor'
-		self.sensors_label_id = 'id'
-		
-		# Path to list of alerts
-		self.alerts_path = '/listalert'
-		
-		# Path to get and set modes
-		self.mode_get_path = '/mysensors'
-		self.mode_get_label = 'alarm_mode'
-		self.mode_set_path = '/alarmmode'
-		self.mode_set_field = 'action'	# Name for GET field
-		self.mode_off = 'OFF'		# Value for off
-		self.mode_custom = 'CUSTOM'	# Value for custom
-		self.mode_on = 'ON'		# Value for on
-		
-		# Cameras
-		# mac=00:0e:8f:c9:59:44&flip=0&led_mode=0&alert_pan=1&rec24=0&da=1&dp=4&name=Salon
-		self.cameras_list = '/homescope/mycams'
-		self.camera_snapshot = '/homescope/snapshot'
-		self.camera_video = '/homescope/flv'
-		self.camera_get_config_path = '/homescope/camsettings'
-		self.camera_set_config_path = '/homescope/camsettings'
-		self.camera_set_config_mac = 'mac'
-		self.camera_set_config_flip = 'flip'
-		self.camera_set_config_leds = 'led_mode' # set to 0 to turn the leds on
-		self.camera_set_config_detectionsensibility = 'dp' # from 1 to 4,
 	
 	def __str__ (self):
 		'''
@@ -176,7 +225,7 @@ class HomeSFR ():
 			data = self.auth_extra_fields
 			data [self.auth_user_field] = self.username
 			data [self.auth_pass_field] = self.password
-			data = bytes (urlencode (data), 'UTF8')
+			data = str2bytes (urlencode (data))
 			if self.DEBUG:
 				print ('Cookies ' + str( len(self.cookies)))
 				print ('Sending data ' + str (data))
@@ -241,7 +290,7 @@ class HomeSFR ():
 		r = self.base_url + self.mode_get_path
 		if self.DEBUG:
 			print ('Getting ' + r)
-		a = bytes2file (self.opener.open (r).readall ())
+		a = self.bytes2file (self.opener.open (r).read ())
 		b = ET.parse (a).getroot ()
 		c = b.get (self.mode_get_label)
 		if self.DEBUG:
@@ -261,7 +310,7 @@ class HomeSFR ():
 		if (self.autologin and self.test_login () == False):
 			self.login ()
 		r = self.base_url + self.sensors_list
-		a = bytes2file (self.opener.open (r).readall ())
+		a = self.bytes2file (self.opener.open (r).read ())
 		b = ET.parse (a)
 		r = []
 		for i in b.findall (self.sensors_label):
@@ -273,29 +322,11 @@ class HomeSFR ():
 		Returns a Sensor object for the sensor id or None if sensor is not found
 		The available ids can be got from the list_sensors method
 		'''
-		def build_tree (element):
-			r = {}
-			if self.DEBUG:
-				print ('Diving in the element ' + element.tag)
-			for i in element.getchildren ():
-				if i.getchildren () == []:
-					r.update ({i.tag: i.text})
-				else:
-					r.update ({i.tag: build_tree (i)})
-			return (r)
 		if (self.autologin and self.test_login () == False):
 			self.login ()
-		r = self.base_url + self.sensors_list
-		a = bytes2file (self.opener.open (r).readall ())
-		b = ET.parse (a)
-		r = None
-		for i in b.findall (self.sensors_label):
-			if self.DEBUG:
-				print ('Testing sensors ' + i.get (self.sensors_label_id))
-			if (i.get (self.sensors_label_id) == id):
-				r = build_tree (i)
-				break
-		return (Sensor (r))
+		r = Sensor (id, self.opener)
+		r.refresh ()
+		return (r)
 	
 	def get_all_sensors (self):
 		'''
@@ -305,32 +336,52 @@ class HomeSFR ():
 		for i in self.list_sensors ():
 			r.append (self.get_sensor (i))
 		return (tuple (r))
+	
+	def get_camera (self, id):
+		'''
+		Get a Camera object from the sensor's id
+		'''
+		if (self.autologin and self.test_login () == False):
+			self.login ()
+		r = Camera (id, self.opener)
+		r.refresh ()
+		return (r)
 
-class Sensor:
+class Sensor (Common):
 	'''
 	Class used to read easily the sensors
 	'''
-	def __init__ (self, sensor_dict):
+	def __init__ (self, id, opener):
 		'''
 		Initialize the class with the dict producted by HomeSFR.get_sensors ()
 		'''
+		Common.__init__ (self)
 		
-		self.sensor_dict = sensor_dict
-		
-		# Field names
-		self.type_field = 'deviceType'
-		self.model_field = 'deviceModel'
-		self.version_field = 'deviceVersion'
-		self.name_field = 'name'
-		self.longname_field = 'long_name'
-		self.namegender_field = 'name_gender' # Only usefull for French for the moment
-		self.batterylevel_field = 'batteryLevel'
-		self.signal_field = 'signalLevel'
-		self.lasttrigger_field = 'lastTriggerTime'
-		self.lasttrigger_dateformat = '%Y-%m-%d %H:%M:%S'
-		self.status_field = 'status'
-		self.status_value_ok = 'OK'
-		# I don't have any other value for the moment
+		self.id = id
+		self.sensor_dict = None
+		self.opener = opener
+	
+	def refresh (self):
+		'''
+		Gets or refresh the data for the sensor
+		'''
+		def build_tree (element):
+			r = {}
+			for i in element.getchildren ():
+				if i.getchildren () == []:
+					r.update ({i.tag: i.text})
+				else:
+					r.update ({i.tag: build_tree (i)})
+			return (r)
+		r = self.base_url + self.sensors_list
+		a = self.bytes2file (self.opener.open (r).read ())
+		a.seek (0)
+		b = ET.parse (a)
+		self.sensor_dict = None
+		for i in b.findall (self.sensors_label):
+			if (i.get (self.sensors_label_id) == self.id):
+				self.sensor_dict = build_tree (i)
+				break
 	
 	def get_raw (self):
 		'''
@@ -338,65 +389,71 @@ class Sensor:
 		'''
 		return (self.sensor_dict)
 	
+	def get_mac (self):
+		'''
+		Returns the sensor's model, if any, None either
+		'''
+		return (self.sensor_dict [self.sensors_mac_field])
+	
 	def get_type (self):
 		'''
 		Returns the sensor's type
 		'''
-		return (self.sensor_dict [self.type_field])
+		return (self.sensor_dict [self.sensors_type_field])
 	
 	def get_model (self):
 		'''
 		Returns the sensor's model, if any, None either
 		'''
-		return (self.sensor_dict [self.model_field])
+		return (self.sensor_dict [self.sensors_model_field])
 	
 	def get_version (self):
 		'''
 		Returns the sensor's version
 		'''
-		return (self.sensor_dict [self.version_field])
+		return (self.sensor_dict [self.sensors_version_field])
 	
 	def get_name (self):
 		'''
 		Returns the sensor's name
 		'''
-		return (self.sensor_dict [self.name_field])
+		return (self.sensor_dict [self.sensors_name_field])
 	
 	def get_longname (self):
 		'''
 		Returns the sensor's type name in system's language and the sensor's name
 		'''
-		return (self.sensor_dict [self.longname_field])
+		return (self.sensor_dict [self.sensors_longname_field])
 	
 	def get_namegender (self):
 		'''
 		Return M for male and F for female.
 		Only usefull for languages with gender on nouns
 		'''
-		return (self.sensor_dict [self.namegender_field])
+		return (self.sensor_dict [self.sensors_namegender_field])
 	
 	def get_batterylevel (self):
 		'''
 		Returns the sensor's battery level, out of 10
 		It seems that batteryless sensors return 255
 		'''
-		return (int (self.sensor_dict [self.batterylevel_field]))
+		return (int (self.sensor_dict [self.sensors_batterylevel_field]))
 	
 	def get_signal (self):
 		'''
 		Returns the sensor's signal quality, out of 10
 		'''
-		return (int (self.sensor_dict [self.signal_field]))
+		return (int (self.sensor_dict [self.sensors_signal_field]))
 	
 	def get_lasttrigger (self):
 		'''
 		Return the timestamp of the sensor's last triger
 		The sensors always trigger, even when the alarm's mode is off
 		'''
-		a = self.sensor_dict [self.lasttrigger_field]
+		a = self.sensor_dict [self.sensors_lasttrigger_field]
 		# Try because camera return the date '0000-00-00 00:00:00' that is ununderstandable
 		try:
-			b = datetime.strptime (a, self.lasttrigger_dateformat)
+			b = datetime.strptime (a, self.sensors_lasttrigger_dateformat)
 		except ValueError:
 			return (0)
 		r = int (b.timestamp ())
@@ -406,4 +463,23 @@ class Sensor:
 		'''
 		Returns True is the sensor is OK, False either
 		'''
-		return (self.sensor_dict [self.status_field] == self.status_value_ok)
\ No newline at end of file
+		return (self.sensor_dict [self.sensors_status_field] == self.sensors_status_value_ok)
+
+class Camera (Sensor):
+	'''
+	Class used to manipulate easily cameras
+	'''
+	def __init__ (self, sensor_dict, opener):
+		'''
+		Initialize the class with the dict producted by HomeSFR.get_camera ()
+		'''
+		Sensor.__init__ (self, sensor_dict, opener)
+	
+	def get_snapshot (self):
+		'''
+		Get a snapshot from the camera
+		Return a PIL.Image object
+		'''
+		r = self.base_url + self.camera_snapshot + '?' + self.camera_snapshot_mac + '=' + self.get_mac ()
+		a = self.bytes2image (self.opener.open (r).read ())
+		return (a)
\ No newline at end of file