During a session in which a user is interacting with a user interface, event data is acquired about user inputs to the user interface. The user interface may include a web page. This event data indicative of keystrokes, mouse clicks, mouse movement, and shifts in focus is processed to generate a score. Event data associated with keystrokes and mouse clicks increase the score while events associated with mouse movement decrease the score. A score above a threshold is indicative of a keyboard user, while a score below the threshold is indicative of a pointer user. For example, a keyboard user may be utilizing an assistive technology such as a screen reader application to interact with the user interface. Metrics indicative of whether the user is a pointer or keyboard user may be determined and used to guide website design, change the user interface being presented, and so forth.