What is the main function of an on-screen keyboard?

The main function of an on-screen keyboard is to allow input using touchscreens and other pointing devices. On-screen keyboards are designed to enable users to interact with their devices in situations where a physical keyboard may not be practical or available. This is particularly important for touch-enabled devices, as users can tap on the on-screen keys directly with their fingers or with a stylus.

In the context of accessibility, on-screen keyboards provide critical support for users who may have mobility impairments that prevent them from using a traditional keyboard. The flexibility of selecting keys via touch makes it a versatile tool for various applications and environments, facilitating efficient data entry across different devices.

While larger keys can enhance usability, support for multiple languages, and musical programs are functionalities offered by some on-screen keyboards, they are not the primary purpose of such technology. The essential aspect remains that the on-screen keyboard functions as an input method for touch-driven interfaces, bridging the gap for users without conventional access to keyboard inputs.