1. A method for initiating a function on a computing device, comprising: detecting a path event on a touch sensitive input device; determining whether the path event traces an ellipsoidal shape; determining a measure of the path event when the path event traces an ellipsoidal shape; and initiating an operation corresponding to the ellipsoid path event when the determined measure of the path exceeds a first threshold value; displaying a contorted image as part the initiated operation; and completing the operation when the determined measure of the path exceeds a second threshold value.