Abstract: A system comprises sensors configured to determine readings relating to a person sitting on a chair; a processor configured to process the readings from the sensors and to estimate an estimated posture of the person based on the sensors' readings; and a haptic feedback device that is located on the chair; wherein said processor is configured to instruct said haptic feedback device to provide haptic feedback to the person based on the estimated posture. A method comprises obtaining readings relating to a person sitting on the chair; estimating an estimated posture of the person based on the readings; selecting a feedback to be provided to the person based on the estimated posture; and issuing a haptic feedback based on the feedback, wherein the haptic feedback is provided to the person by a haptic feedback device that is located on the chair.