Tourism - and if you've run out of roaming data or are being charged per MB then it's actually very useful. We need a better way of doing it though, this unaut

Tourism - and if you've run out of roaming data or are being charged per MB then it's actually very useful. We need a better way of doing it though, this unauthenticated network with a captive portal running on some embedded device or some php on a cloud server somewhere is total junk. There is wifi that is authed via your mobile provider on TFL (now mostly redundant as lines now have 4g/5g) but I think it's actually also piped back to your mobile provider and usage comes out of your allowance if you've got one. What if we were able to do the auth step via sim (so we know who is on the network if there's bad traffic) but terminated the traffic ourselves (i.e doesn't come out of your mobile allowance or get piped to them in the first place).