I have never used a bitcoin ATM, nor have I ever seen one. All I know about it is what I've read from this forum and other sites, since I've never met anyone that have used it. So I would like to ask a few questions that I couldn't get the answer to online.

1. Do they require any form of identification to use? Like a passport or ID card
2. When you want to buy or sell with it, does it have P2P trading? Or does the ATM and bitcoin belong to a company, and you're simply buying from or selling to them?