The last thing a parent wants is to forget a child in a car.

Leaving your child in the car could potentially lead to them getting heatstroke, injury, or even death. Unfortunately, it happens. In fact, it happens quite often around the world that some automakers even developed rear-seat passenger detection systems.

Hyundai, however, has taken the safety system a step further. Hyundai Mobis has developed a radar-based rear passenger detection system to prevent babies and children from being left behind inside vehicles by alerting parents. For comparison, current systems typically use weight sensors in a children’s car seats or the ultrasonic sensors to monitor for rear occupants.

Hyundai is making it impossible for parents to be careless image

According to the automaker, using a radar sensor has helped improve detection accuracy. Because they are using the same radar sensor used in autonomous driving, it can detect and distinguish adults, infants, and pets in the rear seats. Hyundai also added that it can “penetrate clothes and measure various biosignals, e.g. micromovements of passengers’ chests and blood flow”, detecting the presence of rear-seated occupants more accurately.

The system developed by Hyundai Mobis works when it detects a passenger left in the rear seat as the driver gets out of the vehicle. Once a passenger or baby is detected, it alerts the driver by making a sound. It also does so through the instrument panel and even by sending an alert to the driver’s smartphone.

Hyundai Mobis plans to pitch its radar-based rear occupant alert system to other automakers in the future. The automaker did not mention when the newly developed system will be put into production. As such, parents should always remember whether to check on their children in the back seat.