I'm creating a kiosk style display running a locally hosted web information application. All command/selections etc are by web buttons etc so I don't need a keyboard during normal operation. However to close it down I need to break-into the secure kiosk by pressing ctrl+alt+bkspace Can I either send this sequence fro a web page button or have a button to call a virtual keyboard so I can enter the key sequence. I have matchbox keyboard installed with a desktop shortcut.
Due to security, Chromium does not allow websites to start up programs. Imagine the consequences if it did!
There is a way to do it though: Get a Chrome extension.
This is one such on-screen-keyboard. It's advertised to pop up automatically when the user clicks inside a text box.