xvkbd 4.0-1 (amd64 binary) in ubuntu focal

 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.