Is ohare allowing non ticket persons inside the terminals? I have a friend flying in and she’s never been there before so I wanted to be there to pick her up from the terminal.

You can't go past security check without a ticket but you can go in building. Or into baggage claim and wait for her

Yes you can go in, and you can go into baggage claim. Lots of signs to help guide you.

Yes you can get all the way to security check in which isn't far. From the front doors to security is approx 30 ft.

Yes, you can go inside till security check.

Yes you can go in all the way to security check and the baggage claim. Any further your gonna need a gate pass.

You can ask for a gate pass from the airline she is flying on, but you would need a legit reason. I get one every time my elderly mother flies so I can take her to the gate