There’s facial recognition, car and household alarms and a variety of other high tech security measures that help keep our things safe. But the Japanese have taken this to a new high (or low) with a car seat that can identify who’s sitting in it.

Scientists at The Advanced Institute of Industrial Technology in Tokyo have created a pressure car seat that uses a system of 360 pressure sensors that can tell who’s sitting in the seat. It’s 98 percent recognition rate comes via data sent to a laptop that’s then collected so that it “reads” your behind. It creates a pressure map that is used as a “key”, adding another layer of security for your car.

There are still flaws to work out, such as will it recognize you if you change sitting positions due to an injury or if you’ve gained or lost weight. But researchers hope to attract car companies and bring this fascinating invention to market within two to three years,