Piezoresistive sensors are devices that measure changes in resistance due to mechanical stress. When pressure or force is applied to the sensor, its material deforms, altering its electrical resistance. This change can be precisely measured and converted into an electrical signal, making these sensors useful in various applications, such as pressure sensing and force measurement. These sensors are commonly made from materials like silicon, which exhibit significant piezoresistive effects. They are widely used in industries, including automotive and medical, for monitoring pressure in systems like tire pressure monitoring systems and blood pressure monitors.