https://techcrunch.com/2018/06/14/purdues-phade-technology-lets-cameras-talk-to-you/

It’s become almost second nature to accept that cameras everywhere — from streets, to museums and shops — are watching you, but now they may be able to communicate with you, as well. New technology from Purdue University computer science researchers has made this dystopian prospect a reality in a new paper published today. But, they argue, it’s safer than you might think.

The system is called PHADE, which allows for something called “private human addressing,” where camera systems and individual cell phones can communicate without transmitting any personal data, like an IP or Mac address. Instead of using an IP or Mac address, the technology relies on motion patterns for the address code. That way, even if a hacker intercepts it, they won’t be able to access the person’s physical location.