Cool...Smartphones started using the fingerprint scanner to unlock your phone followed by Samsung who introduced Retina scanner to unlock the phone. This is followed with upcoming iPhone X will use Face ID, a technology that unlocks your iPhone X by using infrared and visible light scans to uniquely identify your face.

Now we know what to expect next, We could definitely use our DNA's to unlock the phone.The question when this be made possible and who comes first in the never-ending race