1. A computer-implemented method, comprising: identifying a swiping action from a touch sensor button of a computing device to a touchscreen of the computing device, wherein: (i) the touchscreen includes a touch-sensitive overlay configured to detect user contact with the touchscreen and to distinguish among multiple different locations of user contact with the touchscreen, the touchscreen configured to output displays of different multiple-pixel graphics, (ii) the touch sensor button is distinct from the touch-sensitive overlay of the touchscreen, the touch sensor button is located outside of the touchscreen and is separated from the touchscreen by at least a portion of a housing of the computing device, the touch sensor button is configured to detect user contact with the touch sensor button but not to distinguish among multiple different locations of user contact with the touch sensor button, and the touch sensor button is not configured to output displays of different multiple-pixel graphics, and (iii) identifying the swiping action includes: determining, while the computing device is in a state that provides a first graphical display on the touchscreen, that the touch sensor button has been physically contacted by a user, determining that the physical contact with the touch sensor button has ended, and determining, within a predetermined time period of the end of the physical contact with the touch sensor button, that a swiping motion across the touchscreen has originated at a peripheral edge of the touchscreen, the swiping motion across the touchscreen completing the swiping action from the touch sensor button to the touchscreen; and in response to identifying the swiping action from the touch sensor button of the computing device to the touchscreen of the computing device, changing a display of the touchscreen based on the identified swiping action, wherein changing the display of the touchscreen based on the identified swiping action comprises invoking a predetermined computerized routine that: (i) is not otherwise invoked through a physical contact with the touch sensor button alone when the computing device is in the state that provides the first graphical display, and (ii) is also not otherwise invoked through a single physical user interaction with the touchscreen when the computing device is in the state that provides the first graphical display.