10. A method as recited in claim 9 wherein said step of creating a theoretical line comprises: collecting a plurality of sample points along a gesture path; forming said theoretical line including at least two of said plurality of sample points.
10. A method as recited in claim 9 wherein said step of creating a theoretical line comprises: collecting a plurality of sample points along a gesture path; forming said theoretical line including at least two of said plurality of sample points. 15. A method as recited in claim 10 wherein said step of comparing said theoretical line to said predetermined criteria comprises: determining whether the absolute value of a sum of the signed distances of said plurality of sample points from said theoretical line is greater than a predetermined amount.