diff --git a/README.md b/README.md
index be78895..6305cea 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 # wlan_pioneer
-ROS package to map WLAN availability using a mobile robot (Pioneer P3-DX)
+ROS package to map WLAN availability using a mobile robot (Pioneer P3-DX). The map is created with slam and the wlan signal is displayed as a heatmap.
 
 This is a project for the lecture Autonomous Mobile Robots (AMR) at [Hochschule Mannheim](https://www.hs-mannheim.de/).
 
@@ -9,7 +9,7 @@ This is a project for the lecture Autonomous Mobile Robots (AMR) at [Hochschule
  - Pioneer P3-DX robot
  - Sick laser scanner
  - (Game) Controller
- - WLAN Stick
+ - WLAN Stick (2.4G and 5G)
  
  ### Software
  - Ubuntu 18.04 alias Bionic Beaver
@@ -17,4 +17,5 @@ This is a project for the lecture Autonomous Mobile Robots (AMR) at [Hochschule
  - [catkin](http://wiki.ros.org/catkin)
  - [P2os driver](http://wiki.ros.org/p2os-purdue) ([code from here](https://github.com/allenh1/p2os))
  - [slam_gmapping](http://wiki.ros.org/slam_gmapping) ([code from here](https://github.com/ros-perception/slam_gmapping))
- - [openslam_gmapping](http://wiki.ros.org/openslam_gmapping) ([code from here](https://github.com/ros-perception/openslam_gmapping))
+ - [openslam_gmapping](http://wiki.ros.org/openslam_gmapping) ([code from here](https://github.com/ros-perception/openslam_gmapping)))
+ - [wifi-scan library](https://github.com/fzirker/wifi-scan)