Thwarting Attacks that involve Analyzing Hardware Sensor Output

A hardware sensor and a hardware user-input component are integrated in a portable electronic device. The hardware sensor is operable to produce hardware sensor output indicative of orientation or motion or both of the device within its environment. The hardware user-input component has multiple elements operable to accept user input through touch. A user-input driver and the device's operating system are jointly operable to detect touch events involving the elements. A software application stored in the device's memory is executable by the device's processor as a process. A sensor driver or the operating system or both are configured to control what hardware sensor output, if any, is receivable by the process. This control may thwart an attack based on analysis of the hardware sensor output, the attack designed to deduce what user input has been made via multiple elements of the hardware user-input component.