I want my house to unlock when I approach with my phone (from the outside of course).
I want my car to unlock when I touch the door handle and it detects my phone in my pocket.
I want the multi-zone AC to automatically adjust when it detects me and my phone in a particular room. Technically I want the multi-zone AC to adjust when it detects me in the room whether I have my phone or not, but that’s a few more years away.