2. The method of claim 1 , wherein: the portable electronic device includes a touch-sensitive surface for receiving a tactile input; and detecting the trigger event comprising receiving a tactile input at the touch-sensitive surface of the portable electronic device.
2. The method of claim 1 , wherein: the portable electronic device includes a touch-sensitive surface for receiving a tactile input; and detecting the trigger event comprising receiving a tactile input at the touch-sensitive surface of the portable electronic device. 3. The method of claim 2 , wherein the motion sensor is configured to detect shaking or swaying of the portable electronic device; and the sensor data corresponds to the detected shaking or swaying of the portable electronic device.