A simulated button or keyboard key that is displayed on a touchscreen. Also called a "soft key." The key is tapped with the finger or stylus for activation. See virtual keyboard and touchscreen.
"touch key." YourDictionary, n.d. Web. 17 August 2018. <http://www.yourdictionary.com/touch-key>.
touch key. (n.d.). Retrieved August 17th, 2018, from http://www.yourdictionary.com/touch-key