What Does Tap (Digital Input Method) Mean?
A tap is the rapid movement of a stylus or finger on a display screen as input on a handheld device. Taps are equivalent to a mouse click on a PC display screen.
Techopedia Explains Tap (Digital Input Method)
A tap on a display screen may be used to open applications or select menu options or different modes of operation. Operating systems (OSs) and applications are carefully designed to recognize the limitations of the finger or stylus, as well as the limitations of a small size display area.