This has been used by establishments that offer paid wifi services to block portable wifi hotspots, http://qz.com/482304/the-fcc-is-cracking-down-on-companies-t

This has been used by establishments that offer paid wifi services to block portable wifi hotspots, http://qz.com/482304/the-fcc-is-cracking-down-on-companies-that-block-personal-wifi-hotspots-at-convention-centers/ http://qz.com/482304/the-fcc-is-cracking-down-on-companies-t...