Abstract: A force sensing resistor (FSR) sensor with bladder system provides for ingress protection for FSR sensors by using sealed bladder areas, which act as air reservoirs. A sealed bladder area is attached to an air vent of a sensor area. The sensor area includes two conductive layers forming an open circuit in the static state, the two conductive layers separated by an air cavity. When a force is applied to the sensing area, the two conductive layers are forced toward each other to form a short circuit and the air in the air cavity is forced out the air vent into the bladder area. When the applied force is removed, the air in the bladder area returns into the air cavity separating the two conductive layers to form the open circuit. The bladder area provides a sealed environment within the FSR sensor, ensuring more reliable and consistent measurements.