Predicting target location given cursor speed and direction Do you guys know of any method or algorithm you are able to predict where a user is moving their cursor given its speed and bearing?

I'm trying to predict if and when users are moving their mouse to a certain part of the screen (address bar location).

Could I exploit Fitts's Law in this regard?
Fitts's law gives you a guess for the length of the movement (in terms of screen distance), and so gives you a rough spot where the user is aiming. Make a list of "points of interest" where the user is likely to click (a priori), and then put together a score which takes into account both the probability that the movement ends at the point, and its prominence. Pick the point with maximal score.

Machine learning has been used to derive the parameters for Fitts's law, and I'm not sure anything more is needed here apart from some UI experiments.