According to the website coinatmradar.com, there are currently 1609 Bitcoin ATMs in the USA nationwide. With banks cracking down on bank accounts sending warnings and sometimes closing down accounts they have seen buying or selling bitcoin and other crypto currencies, the ATM may be a very good anonymous way to buy and sell bitcoin.
Typically, the smallest amounts sayn$500 or less would require no ID, $501 - $2000 would require a text message verify on your cell phone, and a larger transaction above that a fingerprint scan at the ATM machine.
How to use a bitcoin atm video: 
Of course their are different types of bitcoin ATMs. They might be found in a gas station on a countertop or a retail store as a floor model. The fees could range from 8 to 10%. This may seem a bit high, but for the ease of use and anonymity, and access to cash fast for an emergency, this seems like a great idea.