José would like to be anonymous online. How can he minimize his online footprint with Mac addresses? Rich says that most systems are encrypted now, and Google is pushing all websites to update to https. So your traffic gets more encrypted. If that's not enough for you, then randomizing your Mac address is a good way to do it. In iOS 13, for instance, Apple devices generate randomized Mac addresses while online. That's a good way to keep yourself protected. You may try using a VPN, or you can browse privately.