So the protected class they are discriminating against here is “doesn’t want to use wifi”?
The protected class is the poor. The UDHR specifically protects people from discrimination on the basis of property. You cannot treat someone different under the UDHR for owning less property than someone else with regard to all the rights enshrined in the UDHR. Only serving people who bought a mobile phone and paid for a subscription violates that provision.
You had the means to access the Internet, you chose not to use them.
I did not have a mobile phone on me. I could have gone home to fetch my phone because incidentally I happened to have a phone with service at home. But I would not have had time to return to the library and complete my task before it closed.
I’ve also gone over 6 months with no phone service at all sometimes. If I were in one of those time periods, connecting would have been impossible. My phone access is touch and go. I let my service die whenever nothing critical comes up that demands it for a period of time.
And I will do it again. Not having a phone is a goal I will continue to meet, off and on, because it’s important to periodically test whether we have a right to unplug. It’s especially important to test this if you live in a GSM registration part of the world.
Not without a phone.
Have you forgotten that an agreement can be made on paper?
Nothing about a captive portal requires wifi. There are many ways to get that agreement. Neglecting to make the agreement part of the ToS when you become a member is just reckless.