Instead of relying on the physical keyboard to type and enter data, you can use On-Screen Keyboard. On-Screen Keyboard displays a visual keyboard with all the standard keys. You can select keys using the mouse or another pointing device, or you can use a single key or group of keys to cycle through the keys on the screen.

1. Install software keyboard:

$sudo apt-get install matchbox-keyboard

2. Test software keyboard

You can test the keyboard by running:

$matchbox-keyboard

3. Set the software keyboard as Desktop Icon

$cd ~/Desktop
$cp lxterminal.desktop keyboard.desktop

Then, we edit keyboard.desktop:

$nano keyboard.desktop

We need to modify the following lines:

Name=keyboard
Exec=matchbox-keyboard

4. Finishing up
Double click the keyboard icon, the software keyboard will show up.