![](https://lemmy.world/pictrs/image/5acd651d-f072-465e-91c8-4ebdf9bb9e9f.png)
![](https://fry.gs/pictrs/image/c6832070-8625-4688-b9e5-5d519541e092.png)
They already have something kinda like this. All public wifis require that you sign in with phone number and SMS-verification. It might not be as air-tight as whatever the article is about (like a chad I only read headlines), but in practice it seems pretty darn tight IMO.
You might’ve missed a detail.