Early prototypes of ATMs dispensing Bitcoin first appeared about a year ago: put dollars in, and the machine will transfer you the equivalent amount in virtual currency, minus a fee. We first heard stories of such an ATM in Cyprus, then we saw two first generation models at the Bitcoin 2013 convention in May. At Def Con, we glimpsed one in the form of a briefcase that accepted physical coins and printed out a QR code to redeem the digital ones. One of the earliest — if not the earliest — examples of a Bitcoin ATM is Lamassu Incs The Bitcoin Machine. The operator collects the cash once its set up, just like an ATM.