Sure, assuming you're carrying a phone on you. As we continue down this path we seem to be racing towards, I'm sure gait detection, facial recognition, etc., wi

Sure, assuming you're carrying a phone on you. As we continue down this path we seem to be racing towards, I'm sure gait detection, facial recognition, etc., will be in full force in combined systems, sharing data, and they won't need phones to track your movements. They just follow you out your front door and wherever you go, passing whatever license plate scanners/facial scanners they have along the way.