This has been a thing for at least the last couple of years, 802.1x with EAP functionality based off the SIM. If you’re in London in the U.K., it’s how EE autom

This has been a thing for at least the last couple of years, 802.1x with EAP functionality based off the SIM. If you’re in London in the U.K., it’s how EE automatically grant access to the “EE Wifi Auto” network available in the London Underground