cartechboy writes: For as long as you've probably been alive you started a car with a key. Whether that be a metal key or now a plastic transponder that allows you to push a button, you needed a device to start a vehicle. Now Ford's looking to revolutionize the way we start our vehicles. A new patent details how you would start a vehicle using only your fingerprint. It's not stopping with just your fingerprint and starting a car, no, it's looking to have a car measure your vitals such as heart rate, temperature, and other biometric data. Why? Aside from the security aspect of preventing people from stealing your car, there's a huge comfort and safety angle here. Sensors embedded in the steering wheel and seats could gauge body temperature and adjust interior temperatures accordingly to keep you comfortable. From the safety angle, sensors could determine whether drivers are sleepy or if there's a medical emergency. Imagine a vehicle that could stop itself if suddenly the driver experiences a medical emergency such as a heart attack or seizure. This all might sound scary to you, but it's definitely the future. The question now is how long before it's reality?