I believe the issue is that key fobs are too small and underpowered to have any real security. Everything else in our lives we've automated using our cellphone

I believe the issue is that key fobs are too small and underpowered to have any real security. Everything else in our lives we've automated using our cellphone and apps. So why not cars? Bring back the old mechanical coupling method, upgraded for better security in close proximity, and provide a long range automation method via app. Just like your standard light switch. We have the old mechcanical way of using it, and our new radio based way via app.