Hi, Do Bitcoin ATMs only take fiat to turn into BTC or do they also hand out cash? If they don't work both ways, then they can't exchange. I don't know, I never even saw one - I just put myself the question. Since they are called ATMs, they should work both ways...
there's different types some do some don't, seems to be a 70/30 split, the majority can't do cash out http://coinatmradar.com/
Here is a bit of a breakdown of many current Bitcoin "ATMs" 1W=one way (buy bitcoin only) 2W= two ways (bitcoin to cash and back) KYC= Know Your Customer, AML= Anti-money Laundering. * atm4coin 1W & 2W Open source project..ongoing. Machine availability? * Bit-Wallet 1W & 2W No KYC functions. * BTC-O-Matic 1W No KYC functions. * Btcu 1W (possibly 2W) fake mobile no can be used, no effective KYC. * Cash2BTC 1W No KYC functions. (build yourself) * Flycoin 1W (possibly 2W) (requires 3rd party software for Bitcoin) * General Bytes 1W Optional fingerprint reader and AML options for operators. POS functionality including staff tips feature. * Hot Butler 1W Cash or CCs, no KYC features. * Lamassu 1W & 2W Offers document ID scan features. The operator decides. * Moneero 1W (possibly 2W) "Conforms to international AML/KYC standards" * Open BTC ATM 1W DIY (build yourself) 'Open Bitcoin ATM' * Pay Maq 1W * Skyhook 1W No KYC functions. * Tembusu 1W Optional ID scanner/thumbprint scan/AML features for operators. * Bit2Bit 2W Optional KYC/AML features including fingerprint scan for operators. Lite/Doge too. * BitAccess BTM 2W Document scan, mobile phone no. Optional? * Bitxatm 2W + POS, supports any cryptocurrency, KYC/AML options, fingerprint scan option. * BTCpoint 2W KYC options (fingerprint scan etc) for operators. Lite/Doge too. * Coinoutlet 2W KYC/AML options (operators decide) ID scan if required. Accepts altcoins if configured. Online shopping module. * Coinplug 2W AML feature (not known if optional) KYC? (Korean) * Diamond Circle 2W Visa/MC not cash. KYC (via bank CCs) and AML variances for operators. * Genesis1 2W Optional fingerprint reader/gov ID & bank card reader for operators. Lite/Doge too * Localbitcoins ATM 2W Nil KYC features. * Robocoin 2W Optional ID scan/palm vein scan/camera & optional AML feature for operators.
The actual ratio is 60/40 I did write about it here http://coinatmradar.com/blog/bitcoin-atm-operations-and-altcoins-support-first-blackcoin-atm/