Do we have to enter our pv key to the ATM? Sounds quite risky to me
You enter your QR code to receive... insert cash and click send
Just to clarify, you scan the QR code for your Public address, NOT your Private key. < never your private key > You only need to do this, so that the ATM knows where to send the bitcoins you bought. OP, you are very fortunate, some cities do not even have a single ATM.
These ATM distributors concentrate on areas with high volume users of Bitcoin and ignore the smaller markets where adoption is key to the growth of Bitcoin.