caribou software package provides Configurable on screen keyboard with scanning mode, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install caribou
caribou is installed in your system.
Make ensure the caribou package were installed using the commands given below,
$ sudo dpkg-query -l | grep caribou *
You will get with caribou package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | GNOME |
| Package | caribou |
| Version | 0.4.13-0ubuntu1 |
| Description | Configurable on screen keyboard with scanning mode |
| Sub Section | GNOME |