Visiting a Bitcoin4U ATM for the first time? If so, you will need to complete an identity verification process using your cell phone. After you've completed this process, you will be a registered customer for any future purchases. You can also complete the verification of your identify prior to visiting an ATM via our website. To see the fees associated with transactions, check out our website. Fees vary based on market conditions and are also displayed on the Bitcoin machine prior to purchasing.