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?
1. It depends on the regulations in the country where you want to use ATM. Besides country, it also depends on the company's choice but usually companies try to make things as easy as possible to increase revenue. In some countries your experience will be smooth and in some countries it will be bad but one thing that every Bitcoin ATM has in common is that they all have ridiculously high fees. Some charge up to 25% of the transaction value.
2. It doesn't have P2P trading, or P2P you have to use another platform. If you want P2P experience without identity verification, then you should use BISQ exchange. ATM and Bitcoin belong to a company but it might be owned by one person or a group of people who call themselves LTD.