If you are bored with the usual way to unlock your Phone and you wanted to be different, check out ERGO. It uses your ear to unlock your phone.
Without further ado, check out the video.
Not sure the percentage of a ear that is similar to another, I am sure they have done their research to come up with this product. And anyway, if your ear fails to unlock your phone, you can still revert back to keying in your keycode to unlock your phone.