IOPI is a real-time biofeedback device designed for Dysphagia patients. With a dedicated tongue bulb, it measures the muscular strength and endurance of the tongue and lips. Measured data could be used for training purpose or as a baseline in an evaluation. To use it, place the dedicated tongue bubble in patient's mouth and connect it to the IOPI Real-Time Biofeedback device. Practice squeezing your tongue against the tongue bubble or keeping your lips closed to generate a reading pressure while exercising. The device provides users with biofeedback during training, effectively improving the muscle strength and endurance of the tongue and lips. This, in turn, enhances swallowing function. IOPI can be used on healthy elderly who has swallowing challenges, it's good for preventing oral muscle degeneration and exercise the muscle control.