Abstract: Systems and techniques for controlling a device using contacts with a touch sensitive surface, with contacts being analyzed to determine if they represent incidental contacts or deliberate inputs. Upon recognition of a contact to a touch sensitive surface of a device, the contact is analyzed to determine if it meets at least one criterion for recognition as an input. Criteria may include location of the contact, as well as characteristics of the contact or a pattern of which the contact is a part. When a contact is recognized as indicating a deliberate input, user feedback may be provided, indicating to a user that the input was successful or allowing the user to be informed in time to abort or counteract the input.