A posture monitoring system includes one or more contact sensors that are used to map contact or pressure points of a persons body and produce output signals representative of the persons posture. The contact sensors are embedded within a pad, a cushion, an article of furniture or are integrated into a wearable clothing article. In accordance with the embodiments of the invention, a contact sensor is formed by depositing at least one set of flex sensors on opposite sides of a flexible substrate and electrically coupling the opposed set of flex sensors to provide a voltage bridge that cancels noise and to provide a contact sensor that measures both concave and convex changes in curvature.
