Retailers and government do this, sometimes they track you as you move around. Pry-Fi is a great little app if you have an Android phone and root :D https://pl

Retailers and government do this, sometimes they track you as you move around. Pry-Fi is a great little app if you have an Android phone and root :D https://play.google.com/store/apps/details?id=eu.chainfire.pryfi https://play.google.com/store/apps/details?id=eu.chainfire.p... Basically just blasts thousands of MAC addresses into the air flooding their counters and ruining their data.