9. A method comprising: receiving, by a computing device, information that indicates a touch contact on a touch device; determining, by the computing device, a classification of the touch contact based at least in part on contextual information, the contextual information comprising hand position information that indicates a distance from a hand of a user to the touch device, the classification indicating that the touch contact is intentional or unintentional; and determining, by the computing device, whether the classification of the touch contact is accurate, the determining being based, at least in part, on a history of the touch contact.
9. A method comprising: receiving, by a computing device, information that indicates a touch contact on a touch device; determining, by the computing device, a classification of the touch contact based at least in part on contextual information, the contextual information comprising hand position information that indicates a distance from a hand of a user to the touch device, the classification indicating that the touch contact is intentional or unintentional; and determining, by the computing device, whether the classification of the touch contact is accurate, the determining being based, at least in part, on a history of the touch contact. 12. The method of claim 9 , wherein the contextual information further comprises at least one of application information related to an application that is running on the touch device, keyboard input history of a keyboard associated with the touch device, or information that indicates a number of substantially simultaneous touch contacts on the touch device.