Patent ID: 8839155

Claim:
A method, comprising: at a multifunction device with a display and a touch-sensitive surface: detecting a succession of finger gestures by a user's finger on the touch-sensitive surface, including an initial finger gesture, wherein each finger gesture of the succession of finger gestures comprises a finger swipe gesture that has a linear direction and ends with a finger lift-off; and, for each respective finger gesture after the initial finger gesture in the succession of finger gestures: scrolling information on the display at a respective scrolling speed, wherein the respective scrolling speed is determined in accordance with a respective finger movement speed in the respective finger gesture and a finger movement multiplier; determining whether the respective finger gesture meets one or more predetermined swipe gesture criteria, the predetermined swipe gesture criteria including a requirement that the speed of the respective finger swipe gesture's finger at lift-off exceeds a predetermined threshold for lift-off speed; determining whether the respective finger gesture meets one or more predetermined successive gesture criteria, the one or more predetermined successive gesture criteria including that the direction of the respective finger gesture and the direction of a prior finger gesture of the succession of finger gestures meet predefined same linear direction criteria; and in accordance with a determination that the respective finger gesture meets the one or more predetermined swipe gesture criteria and the one or more predetermined successive gesture criteria, updating the finger movement multiplier in accordance with one or more predetermined finger movement multiplier adjustment criteria.