Abstract: “Real-world” gestures such as hand or finger movements/orientations that are generally recognized to mean certain things (e.g., an “OK” hand signal generally indicates an affirmative response) can be interpreted by a touch or hover sensitive device to more efficiently and accurately effect intended operations. These gestures can include, but are not limited to, “OK gestures,” “grasp everything gestures,” “stamp of approval gestures,” “circle select gestures,” “X to delete gestures,” “knock to inquire gestures,” “hitchhiker directional gestures,” and “shape gestures.” In addition, gestures can be used to provide identification and allow or deny access to applications, files, and the like.

Abstract: A multi-touch gesture dictionary is disclosed herein. The gesture dictionary can include a plurality of entries, each corresponding to a particular chord. The dictionary entries can include a variety of motions associated with the chord and the meanings of gestures formed from the chord and the motions. The gesture dictionary may take the form of a dedicated computer application that may be used to look up the meaning of gestures. The gesture dictionary may also take the form of a computer application that may be easily accessed from other applications. The gesture dictionary may also be used to assign user-selected meanings to gestures. Also disclosed herein are computer systems incorporating multi-touch gesture dictionaries. The computer systems can include, desktop computers, tablet computers, notebook computers, handheld computers, personal digital assistants, media players, mobile telephones, and the like.