Install xvkbd by entering the following commands in the terminal:
sudo apt update sudo apt install xvkbd
Description:
software virtual keyboard for X11
xvkbd is a virtual (graphical) keyboard program for X Window System which provides facility to enter characters onto other clients (software) by clicking on a keyboard displayed on the screen. This may be used for systems without a hardware keyboard such as kiosk terminals or handheld devices. This program also has facility to send characters specified as the command line option to another client.
Version: 3.9-1
Section: universe/x11