Drivers license, utility bill, phone number, credit card, etc. The same types of things that other services ask you to provide to prove that you are a real person.
Tweeting anonymously is a non-starter unless they can curtail the bot problem in some other way. If they could curtail the bot problem then they would be doing it already and we wouldn't be having this discussion.
Half the content on Twitter and Facebook is from bots. I would say this is the most fundamentally urgent problem to solve to protect Democracy in this country.
The point of proving identity would be to curtail the bot problem. If someone can fake identification in order to get an account created, then it's trivial to just make up a fake name and picture of a person. Forcing people to not be anonymous does nothing to solve a bot problem, and causes a lot of problems. What if that person is gay with a very conservative family that would not accept them? They would be unable to speak how they please with mandatory non-anonymity.
Twitter already requires a phone number, prepaid credit cards can be very cheap, and not everyone has utility bills in their names. Many people cannot get drivers licenses. These are great for privileged people, but discriminatory against unprivileged people. I don't think stifling their voices is something we need more of.
Tweeting anonymously is a non-starter unless they can curtail the bot problem in some other way. If they could curtail the bot problem then they would be doing it already and we wouldn't be having this discussion.
Half the content on Twitter and Facebook is from bots. I would say this is the most fundamentally urgent problem to solve to protect Democracy in this country.