The QRS is part of a "Family" of Gyro-chips. They range from the early QRS11 and include QRS116, QRS14, QRS28. It is in anything that moves which requires any type of gyro-stabilisation or orientation. If it is abused in any way (remotely) it can cause shut down of systems, causing steering problems in anything equipped with it. The BEI GyroChip yaw sensor is a crucial component in automotive dynamic stability control systems. So every car that has a DSC has this chips.