Cryptocurrency adoption continues to grow across Asia, and with it, the demand for convenient, secure, and user-friendly ways to buy and sell digital assets. One of the most accessible entry points for new users is the crypto ATM—a physical kiosk that allows instant transactions between fiat currency and cryptocurrencies like Bitcoin (BTC), Ethereum (ETH), and Tether (USDT). This guide answers the most common questions about using crypto ATMs, covering fees, transaction limits, supported coins, security practices, and more.
Whether you're in Hong Kong, Taiwan, or planning to use digital asset services elsewhere, understanding how these machines work can save time, reduce risks, and improve your overall experience.
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How Do Crypto ATMs Work?
Crypto ATMs function similarly to traditional bank ATMs but are designed specifically for converting cash into digital currencies—and sometimes vice versa. Users insert cash, scan a wallet QR code, and receive cryptocurrency directly to their personal wallet within minutes.
These machines support a growing list of digital assets, including:
- Bitcoin (BTC)
- Ethereum (ETH)
- Tether (USDT)
- Dogecoin (DOGE)
- Bitcoin Cash (BCH)
While most ATMs allow purchases only, select locations offer two-way transactions, enabling users to both buy and sell cryptocurrencies for local cash.
Transactions are processed on the blockchain and typically require three network confirmations before funds become fully available in your wallet—usually taking between 10 minutes to an hour, depending on network congestion.
Supported Currencies and Transaction Fees
Each ATM accepts specific fiat currencies. Below is a breakdown of current fee structures by region.
Hong Kong (HKD) ATM
- Buying BTC, ETH, DOGE, USDT: 8.6% + HKD$100 fixed fee
BCH purchases carry a 1% fee instead - Selling BTC, ETH, USDT: 8.6% + HKD$25 fixed fee
BCH sales carry a 1% fee - Minimum transaction: HKD$500
- Accepted notes: HKD$1000, $500, $100
- First note requirement: Must be HKD$1000 or $500
USD ATM
- Buying BTC, ETH, USDT: 10% + USD$20 fixed fee
- Minimum transaction: USD$50
- Accepted notes: USD$100, $50
RMB ATM
- Buying BTC, ETH, USDT: 10% + RMB$90 fixed fee
- Minimum transaction: RMB$300
- Accepted notes: RMB$100 only
Note: All fees are subject to change without prior notice based on market conditions.
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What Are the Daily Limits?
To comply with financial regulations and ensure user safety, transaction limits are enforced per session.
Hong Kong ATM
- Minimum per transaction: HKD$500
- Maximum per transaction: HKD$100,000
- For transactions exceeding HKD$100,000, users must complete ATM account registration with identity verification (KYC).
Taiwan ATM
- Minimum per transaction: TWD$1,000
- Maximum per transaction: TWD$360,000
- Currently, only Bitcoin (BTC) can be purchased; selling services are not available.
Registration enables higher limits and streamlined future transactions.
Step-by-Step: How to Register for High-Limit Transactions (Hong Kong Only)
If you plan to trade over HKD$100,000, follow these steps at any COINHERO ATM:
- Tap any cryptocurrency icon
- Press ‘BUY’
- Select ‘MORE THAN 100000HKD’
- Choose ‘NOT YET, BUT I WOULD LIKE TO BE REGISTERED’
- Tap ‘I AGREE’ to consent to data submission
- Enter your email address
- Provide your mobile number for OTP verification
- Check phone for one-time password and enter it
- Scan front and back of your ID card or passport
- Confirm each scan with ‘YES’
- Take a selfie using the built-in camera
- Scan your index finger for biometric verification (twice)
- Press ‘OK’ to finalize registration
Once completed, you'll receive confirmation via email. Your account will be ready for high-value trades immediately.
Can I Cancel or Reverse a Crypto Transaction?
No. Once a transaction is confirmed on the blockchain—whether through an ATM or wallet transfer—it cannot be reversed.
This immutability is a core feature of blockchain technology. Even service providers like COINHERO have no authority to cancel or refund transactions once initiated.
This applies in cases such as:
- Sending funds to the wrong wallet address
- Falling victim to scams or phishing attacks
Always double-check recipient addresses before confirming any transaction.
If you need to track a sent payment, tools like Block Explorer allow you to monitor transaction status on the public ledger.
👉 Learn how to set up a secure crypto wallet in under 5 minutes.
Crypto ATM vs OTC Trading: Key Differences
Choosing between a crypto ATM and over-the-counter (OTC) trading depends on your needs for speed, privacy, volume, and cost.
| Feature | Crypto ATM | OTC Desk |
|---|---|---|
| Minimum Trade Size | HKD$500 | HKD$3,000 |
| Fees | 7.5% – 10% | 0% – 3.2% |
| KYC Required | Not always | Yes |
| Available Coins | BTC, ETH, USDT, DOGE, BCH | Any (based on liquidity) |
ATMs offer instant access with minimal setup, ideal for small-to-medium transactions. OTC desks suit high-volume traders seeking better rates and flexibility.
Frequently Asked Questions (FAQ)
Q: Which cryptocurrencies can I buy at COINHERO ATMs?
You can currently purchase Bitcoin (BTC), Ethereum (ETH), Tether (USDT), Dogecoin (DOGE), and Bitcoin Cash (BCH) at Hong Kong locations. In Taiwan, only Bitcoin (BTC) is available for purchase.
Q: Can I sell cryptocurrency at COINHERO ATMs?
Yes—but only at designated locations in Hong Kong. To sell digital assets, visit the Genesis Block office in person. Selling is not currently supported in Taiwan.
Q: How long does it take to receive crypto after purchase?
After inserting cash and completing the process, your transaction requires three blockchain confirmations. This typically takes 10 minutes to one hour, depending on network traffic and miner fees.
Q: What should I do if the ATM malfunctions during my transaction?
If no TXID (transaction ID) appears, the transaction has failed. Contact support at [email protected] or WhatsApp (+852) 9014 4229 with the date, time, location, and amount inserted. A team member will investigate and respond within 24 hours.
Q: Do you offer escrow services?
Currently, COINHERO does not provide escrow services. All transactions are final upon blockchain confirmation.
Q: Where can I find COINHERO ATM locations?
Visit the official site for updated maps and operating hours: coinhero.hk/atm-locations. Machines are located across major areas in Hong Kong and Taiwan.
Final Tips for Safe Crypto Transactions
- Always verify wallet addresses manually or via QR code scanning
- Use hardware or non-custodial wallets for long-term storage
- Avoid sharing private keys or recovery phrases with anyone
- Enable two-factor authentication (2FA) wherever possible
Digital asset security starts with awareness. By understanding how crypto ATMs operate—and knowing what to expect—you can confidently navigate the world of decentralized finance.
For those ready to explore more advanced trading tools beyond ATMs—such as spot markets, derivatives, staking, and DeFi—there are trusted global platforms built for speed, security, and scalability.
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