An integrated circuit provides high voltage isolation capabilities. The invention provides a method of modulating operation of a device, comprising: providing an attentive user interface for obtaining information about an attentive state of a user; and modulating operation of a device on the basis of the obtained information, wherein the operation that is modulated is initiated by the device. The through-holes 15 are sealed under the state where the coil terminals 42 protrude from the through-holes 15 formed in the base 1. The receiver of the invention further comprises quality determining means for providing the detected data sequence with a value for quality, and estimating means for estimating the bit error ratio-provided that the quality of the detected data sequence fulfils a predetermined quality requirement by comparing the detected data sequence with the data sequence re-encoded with first encoding. The brake pedal structure prevents injury to a driver’s ankle by minimizing impact transmitted through the brake pedal in the vehicle collision.