At the beginning of an Ubuntu installation, what means the ”keyboard = human“ symbol?

At the very beginning of the booting of an installation media (typically a USB stick), before even choosing your language, there is an intriguing symbol. It represents a keyboard, an equal sign (=) and a circled human. This circled human is similar to the accessibility symbol in GNOME.

What does the symbol mean and what would happen if I press a key at that time?


Enables the onscreen keyboard, for kiosks, and for keyboard connection failures.