Keytouch allows the selection of profiles to select your keyboard model from a list in its database. If your keyboard is not present, you can “train” it by starting up keytouch editor and pressing the relevant keys whilst identifying them.

It comprises of two tools: KeyTouch – The tool to setup a keyboard that is already in the database.
KeyTouch-Editor – The tool to setup your keyboard by teaching it. You select your multimedia keyboards input, then press keys and indetify them from a drop down list. Save the configuration file when your done and simply import into Keytouch itself.

Installing KeyTouch & KeyTouch Editor
Open a terminal and enter these commands:
sudo apt-get install keytouch keytouch-editor

More details, here.