diff --git a/pyrobolearn/tools/interfaces/camera/asus_xtion.py b/pyrobolearn/tools/interfaces/camera/asus_xtion.py
index d90f2a7..4b163c6 100644
--- a/pyrobolearn/tools/interfaces/camera/asus_xtion.py
+++ b/pyrobolearn/tools/interfaces/camera/asus_xtion.py
@@ -56,9 +56,9 @@ class AsusXtionInterface(CameraInterface):
     to check if it is correctly detected and working properly.
 
     References:
-        [1] https://github.com/danielelic/PyOpenNI2-Utility
-        [2] https://github.com/kanishkaganguly/OpenNIMultiSensorCapture
-        [3] https://docs.opencv.org/3.1.0/d7/d6f/tutorial_kinect_openni.html
+        - [1] https://github.com/danielelic/PyOpenNI2-Utility
+        - [2] https://github.com/kanishkaganguly/OpenNIMultiSensorCapture
+        - [3] https://docs.opencv.org/3.1.0/d7/d6f/tutorial_kinect_openni.html
     """
 
     def __init__(self, use_thread=False, sleep_dt=0., verbose=False, use_rgb=True, use_depth=True, use_ir=False):
diff --git a/pyrobolearn/tools/interfaces/camera/realsense.py b/pyrobolearn/tools/interfaces/camera/realsense.py
new file mode 100644
index 0000000..79126ef
--- /dev/null
+++ b/pyrobolearn/tools/interfaces/camera/realsense.py
@@ -0,0 +1,73 @@
+#!/usr/bin/env python
+"""Define the RealSense depth camera input interface.
+
+References:
+    - librealsense: https://github.com/IntelRealSense/librealsense
+    - python wrapper (pyrealsense2): https://github.com/IntelRealSense/librealsense/tree/master/wrappers/python
+"""
+
+# TODO: implement this interface
+
+import numpy as np
+
+try:
+    import pyrealsense2 as rs
+except ImportError as e:
+    raise ImportError(repr(e) + '\nTry to install `pyrealsens2`: pip install pyrealsense2'
+                                '\nOr try to install from its repository: '
+                                'https://github.com/IntelRealSense/librealsense/tree/master/wrappers/python\n')
+
+
+from pyrobolearn.tools.interfaces.camera import CameraInterface
+
+
+__author__ = "Brian Delhaisse"
+__copyright__ = "Copyright 2019, PyRoboLearn"
+__credits__ = ["Brian Delhaisse"]
+__license__ = "GNU GPLv3"
+__version__ = "1.0.0"
+__maintainer__ = "Brian Delhaisse"
+__email__ = "briandelhaisse@gmail.com"
+__status__ = "Development"
+
+
+class RealSenseInterface(CameraInterface):
+    r"""RealSense Interface
+
+    References:
+        - librealsense: https://github.com/IntelRealSense/librealsense
+        - python wrapper (pyrealsense2): https://github.com/IntelRealSense/librealsense/tree/master/wrappers/python
+    """
+
+    def __init__(self, use_thread=False, sleep_dt=0., verbose=False, use_rgb=True, use_depth=True):
+        """
+        Initialize the RealSense input interface.
+
+        Args:
+            use_thread (bool): If True, it will run the interface in a separate thread than the main one.
+                The interface will update its data automatically.
+            sleep_dt (float): If :attr:`use_thread` is True, it will sleep the specified amount before acquiring or
+                setting the next sample.
+            verbose (bool): If True, it will print information about the state of the interface. This is let to the
+                programmer what he / she wishes to print.
+            use_rgb (bool): If True, it will get the RGB camera image. Note that if this is enabled, you can not
+                 get IR images at the same time.
+            use_depth (bool): If True, it will get the depth camera image.
+        """
+
+        # TODO
+
+        super(RealSenseInterface, self).__init__(use_thread, sleep_dt, verbose)
+
+    ###########
+    # Methods #
+    ###########
+
+    def run(self):
+        """Run the interface."""
+        pass  # TODO
+
+
+# Test the interface
+if __name__ == '__main__':
+    pass
diff --git a/pyrobolearn/tools/interfaces/camera/webcam.py b/pyrobolearn/tools/interfaces/camera/webcam.py
index b73eb0b..29583f7 100644
--- a/pyrobolearn/tools/interfaces/camera/webcam.py
+++ b/pyrobolearn/tools/interfaces/camera/webcam.py
@@ -34,7 +34,7 @@ class WebcamInterface(CameraInterface):
     tool (such as openpose).
 
     References:
-        [1] https://docs.opencv.org/3.0-beta/doc/py_tutorials/py_gui/py_video_display/py_video_display.html
+        - [1] https://docs.opencv.org/3.0-beta/doc/py_tutorials/py_gui/py_video_display/py_video_display.html
     """
 
     def __init__(self, webcam_id=0, filename=None, fps=20, frame_size=(640, 480), codec='XVID',
diff --git a/pyrobolearn/tools/interfaces/haptic/readme.txt b/pyrobolearn/tools/interfaces/haptic/readme.txt
new file mode 100644
index 0000000..8ee8b99
--- /dev/null
+++ b/pyrobolearn/tools/interfaces/haptic/readme.txt
@@ -0,0 +1,6 @@
+Haptic gloves:
+
+- plexus: http://plexus.im/  (Linux, Python)
+- vrgluv: https://www.vrgluv.com
+- HaptX gloves: https://haptx.com/
+
diff --git a/pyrobolearn/tools/interfaces/mouse_keyboard/spacemouse.py b/pyrobolearn/tools/interfaces/mouse_keyboard/spacemouse.py
index 9fcd312..cb113f9 100644
--- a/pyrobolearn/tools/interfaces/mouse_keyboard/spacemouse.py
+++ b/pyrobolearn/tools/interfaces/mouse_keyboard/spacemouse.py
@@ -7,7 +7,7 @@ Prerequisites:
 
 Troubleshooting:
 - if you get 'OSError: libspnav.so: cannot open shared object file: No such file or directory', you have to copy-paste
-the file '/usr/lib/libspnav.so.0' to '/usr/lib/libspnav.so'
+  the file '/usr/lib/libspnav.so.0' to '/usr/lib/libspnav.so'
 
 Dependencies:
 - `pyrobolearn.tools.interfaces`
diff --git a/pyrobolearn/tools/interfaces/sensors/leapmotion.py b/pyrobolearn/tools/interfaces/sensors/leapmotion.py
new file mode 100644
index 0000000..3413e4c
--- /dev/null
+++ b/pyrobolearn/tools/interfaces/sensors/leapmotion.py
@@ -0,0 +1,74 @@
+#!/usr/bin/env python
+"""Define the Leap Motion hand tracking sensor input interface.
+
+References:
+    - Leap Motion: https://www.leapmotion.com/
+    - Installation (Ubuntu): https://www.leapmotion.com/setup/desktop/linux/
+    - V2 tracking toolkit: https://developer.leapmotion.com/sdk/v2
+    - Python API: https://developer-archive.leapmotion.com/documentation/python/api/Leap_Classes.html
+    - Tutorials: https://www.youtube.com/playlist?list=PLgTGpidiW0iTELuljcIdTkA5SjHa5tudP
+"""
+
+# TODO: implement this interface
+
+import numpy as np
+
+try:
+    import Leap
+except ImportError as e:
+    raise ImportError(repr(e) + '\nTry to install `Leap` (see references in class documentation)')
+
+
+from pyrobolearn.tools.interfaces.sensors import SensorInterface
+
+
+__author__ = "Brian Delhaisse"
+__copyright__ = "Copyright 2019, PyRoboLearn"
+__credits__ = ["Brian Delhaisse"]
+__license__ = "GNU GPLv3"
+__version__ = "1.0.0"
+__maintainer__ = "Brian Delhaisse"
+__email__ = "briandelhaisse@gmail.com"
+__status__ = "Development"
+
+
+class LeapMotionInterface(SensorInterface):
+    r"""Leap Motion Interface
+
+    References:
+        - Leap Motion: https://www.leapmotion.com/
+        - Installation (Ubuntu): https://www.leapmotion.com/setup/desktop/linux/
+        - V2 tracking toolkit: https://developer.leapmotion.com/sdk/v2
+        - Python API: https://developer-archive.leapmotion.com/documentation/python/api/Leap_Classes.html
+        - Tutorials: https://www.youtube.com/playlist?list=PLgTGpidiW0iTELuljcIdTkA5SjHa5tudP
+    """
+
+    def __init__(self, use_thread=False, sleep_dt=0., verbose=False, use_rgb=True, use_depth=True):
+        """
+        Initialize the RealSense input interface.
+
+        Args:
+            use_thread (bool): If True, it will run the interface in a separate thread than the main one.
+                The interface will update its data automatically.
+            sleep_dt (float): If :attr:`use_thread` is True, it will sleep the specified amount before acquiring or
+                setting the next sample.
+            verbose (bool): If True, it will print information about the state of the interface. This is let to the
+                programmer what he / she wishes to print.
+        """
+
+        # TODO
+
+        super(LeapMotionInterface, self).__init__(use_thread, sleep_dt, verbose)
+
+    ###########
+    # Methods #
+    ###########
+
+    def run(self):
+        """Run the interface."""
+        pass  # TODO
+
+
+# Test the interface
+if __name__ == '__main__':
+    pass
diff --git a/pyrobolearn/tools/interfaces/sensors/myo_armband.py b/pyrobolearn/tools/interfaces/sensors/myo_armband.py
new file mode 100644
index 0000000..77cd155
--- /dev/null
+++ b/pyrobolearn/tools/interfaces/sensors/myo_armband.py
@@ -0,0 +1,80 @@
+#!/usr/bin/env python
+"""Define the Myo armband sensor input interface.
+
+Warnings: "Myo production has officially ended as of Oct 12, 2018 and is no longer available for purchase".
+
+References:
+    - Myo Armband (webpage for support): https://support.getmyo.com/hc/en-us
+    - PyoConnect: http://www.fernandocosentino.net/pyoconnect/
+        - related useful repository: https://github.com/ijin/venus-lift-lights/blob/master/PyoConnect.py
+    - MyoLinux: https://github.com/brokenpylons/MyoLinux
+    - myo-python: https://github.com/NiklasRosenstein/myo-python
+    - Software for Thalmic's Myo armband: https://github.com/balandinodidonato/MyoToolkit
+"""
+
+# TODO: implement this interface
+
+import numpy as np
+
+try:
+    import myo
+except ImportError as e:
+    raise ImportError(repr(e) + '\nTry to install `myo` or `PyoConnect`')
+
+
+from pyrobolearn.tools.interfaces.sensors import SensorInterface
+
+
+__author__ = "Brian Delhaisse"
+__copyright__ = "Copyright 2019, PyRoboLearn"
+__credits__ = ["Brian Delhaisse"]
+__license__ = "GNU GPLv3"
+__version__ = "1.0.0"
+__maintainer__ = "Brian Delhaisse"
+__email__ = "briandelhaisse@gmail.com"
+__status__ = "Development"
+
+
+class MyoArmbandInterface(SensorInterface):
+    r"""Myo Armband Interface
+
+    Warnings: "Myo production has officially ended as of Oct 12, 2018 and is no longer available for purchase".
+
+    References:
+        - Myo Armband (webpage for support): https://support.getmyo.com/hc/en-us
+        - PyoConnect: http://www.fernandocosentino.net/pyoconnect/
+            - related useful repository: https://github.com/ijin/venus-lift-lights/blob/master/PyoConnect.py
+        - MyoLinux: https://github.com/brokenpylons/MyoLinux
+        - myo-python: https://github.com/NiklasRosenstein/myo-python
+        - Software for Thalmic's Myo armband: https://github.com/balandinodidonato/MyoToolkit
+    """
+
+    def __init__(self, use_thread=False, sleep_dt=0., verbose=False, use_rgb=True, use_depth=True):
+        """
+        Initialize the RealSense input interface.
+
+        Args:
+            use_thread (bool): If True, it will run the interface in a separate thread than the main one.
+                The interface will update its data automatically.
+            sleep_dt (float): If :attr:`use_thread` is True, it will sleep the specified amount before acquiring or
+                setting the next sample.
+            verbose (bool): If True, it will print information about the state of the interface. This is let to the
+                programmer what he / she wishes to print.
+        """
+
+        # TODO
+
+        super(MyoArmbandInterface, self).__init__(use_thread, sleep_dt, verbose)
+
+    ###########
+    # Methods #
+    ###########
+
+    def run(self):
+        """Run the interface."""
+        pass  # TODO
+
+
+# Test the interface
+if __name__ == '__main__':
+    pass