A virtual keyboard is a software-based input device that allows users to enter text into an electronic device without physically pressing any keys. Instead, it uses touch or motion sensors to detect finger movements and translates them into keystrokes on the screen. This type of keyboard can be particularly useful for devices with small physical keyboards or those where a physical keyboard is not practical, such as in the case of a tablet computer or smartphone. The virtual keyboard can also be customized by changing its layout, color scheme and adding special characters that are not available on traditional keyboards.