Unlocking a Car via a Phone Ap

Near field communication option would be nice, in my personal opinion. If you've literally got to get within half an inch of the door for the unlocked opop that resolves a lot of sigant concerns. Maybe there's got to be a way to do it. It can't be a technical limitation. Some one was sold on using the cloud,. Like jim as saying, some of the cards have the smart card type reader, right? And phones have some kind of thing where they can be used as a smart card rate, or you can just do blue tooth on lock, yes.