Obesity has been on the rise in recent decades and created a significant burden on health care. Bariatric surgery has emerged as the most effective treatment to help severely obese patients. Despite the major success of bariatric surgery, a significant amount of weight recidivism and failure of sustained weight loss is still seen. One study showed that up to 20% of patients regain a significant amount of their weight after surgery. The purpose of our research is to determine if monitoring bariatric patients’ pre- and postoperative compliance with active and passive sensors can bolster bariatric patients’ progress and lessen weight recidivism.