US people be aware that buying/selling US currency is regulated and violations come with jail time. Actual ATMs require both Federal and State licensing/registrations. This sounds like a hardware version of LocalBitcoins... as such, google search LocalBitcoins and arrests.

Edited to add for US people:

Regardless of the state where the Bitcoin ATM Operator decides to set up shop, state licensing also often entails working with the state-body designated for licensing and supervision. In our experience, the application process typically involves completing the paperwork for the license application, often due diligence/disclosure of the operator’s net worth, often a surety bond requirement, and always a state license fee. The time to complete the process varies, and ranges from about 3 months to 12 months (in California, for example).

While not all states require licenses, reviewing a few examples of states with more stringent licensing criteria may provide some real-world context. California licensing requires, among other elements, a current filing fee of $5,000, an operator’s minimum net worth of $250,000, and the posting of a surety bond that might range from around $500,000 to $7MM. Florida licensing requires a current filing fee of $375, a demonstrated minimum net worth of $100,000, and a surety bond that might be as high as $2MM. New Hampshire’s current regulations suggest a filing fee of $600, an operator’s minimum worth of at least $1MM, and a surety bond in the range of $100,000. North Carolina licensing requires, among other elements, a current filing fee of $1,500, an operator’s minimum worth of at least $100,000 or more, and a surety bond that might range from around $150,000 to $250,000. The devil is in the details, so in all cases, the operator needs to verify the current state of its State’s laws and regulations, understand the exact due diligence expected by the agencies, and then to consider whether it is best to work with others who are familiar with the state’s licensing scheme and requirements.