How to Set Up Passkey Passwordless Login on Binance APP

Passkey: The Password Killer

Passwords have had a fundamental flaw since the day they were invented — they are "something you know," and "knowing" something is something that can be stolen. Phishing sites can trick you out of your password, data breaches can expose your password, and malware can record your password. The entire network security industry has spent decades trying to patch passwords' various vulnerabilities, but the root problem has always remained.

Passkey (also called a passkey) is the password killer. It is based on the FIDO2 standard and uses public-key cryptography to replace the traditional password. You do not need to remember anything or type anything — as long as your device is in your hands, a single biometric check completes the login. And Passkeys are fundamentally phishing-proof at the protocol level.

Binance already supports Passkey login. Today I will walk you through a full understanding of this technology and how to complete the setup.

How Passkeys Work

The Traditional Password Flow

1. You create a password (e.g., "MyPassword123")
2. A hash of the password is stored on Binance's servers
3. When you log in, you enter the password and the server verifies whether the hash matches
4. Risk: The password can be intercepted in transit, and the stored hash can be exposed in a data breach

The Passkey Flow

1. Your device generates a key pair: a public key and a private key
2. The public key is sent to Binance for storage; the private key stays in the secure chip on your device
3. When you log in, Binance sends a "challenge"
4. Your device signs the challenge with the private key and sends it back to Binance
5. Binance verifies the signature using the public key
6. Key point: The private key never leaves your device and is never transmitted over the network

Why Can't Passkeys Be Phished?

A Passkey is bound to the domain name it was created on (e.g., binance.com). When you try to log in on a phishing site (e.g., b1nance.com), your device detects that the domain does not match and refuses to generate a signature. This is anti-phishing protection built into the protocol at a fundamental level — it does not depend on the user's judgment.

Device Compatibility

iOS Devices

• Requirement: iOS 16 or later
• Storage: Passkey stored in iCloud Keychain
• Cross-device sync: Automatically syncs to all your Apple devices via iCloud
• Verification method: Face ID or Touch ID

Android Devices

• Requirement: Android 9 or later (Android 14+ recommended for the best experience)
• Storage: Stored through Google Password Manager
• Cross-device sync: Syncs via Google account
• Verification method: Fingerprint, facial recognition, or screen lock

Cross-Platform Use

Passkeys support cross-device login. For example, you can use a Passkey on your phone to scan a QR code and log in to the Binance web version on a computer — no additional setup on the computer required.

Setting Up a Passkey in the Binance APP

Setup Steps

1. Open the Binance APP and ensure you are logged in
2. Tap the profile icon in the top-left corner → "Security"
3. Find the "Passkey" option
4. Tap "Create Passkey"
5. The system will ask you to complete a security verification (password + Google Authenticator/SMS code)
6. Once verified, the system will invoke the device's Passkey creation flow:
   • iOS: A Face ID/Touch ID confirmation window appears
   • Android: A fingerprint/facial recognition confirmation window appears
7. After confirming biometrics, the Passkey creation is complete
8. The system will display the Passkey's name and creation time

After Successful Creation

• The Passkey is automatically saved in your device's secure storage
• iOS users can view it in "Settings → Passwords"
• Android users can view it in Google Password Manager
• The Passkey will automatically sync to your other devices on the same account

Using Passkey to Log In

Logging In on the Same Device

1. Open the Binance APP login page
2. Select "Log in with Passkey" (or a similar option)
3. The system shows the biometric verification prompt
4. Complete Face ID / fingerprint recognition
5. Login successful

The entire process requires no password or verification code input and typically completes within 2 seconds.

Using Your Phone's Passkey to Log In on a Computer

1. Open the Binance website login page on your computer
2. Select "Log in with Passkey"
3. A QR code appears on the page
4. Scan the QR code with your phone (iOS uses the Camera app, Android uses the system scanner)
5. Your phone shows the biometric verification prompt
6. After completing verification, the web page logs in automatically

Passkey vs. Traditional Verification Methods

In-Depth Security Analysis of Passkeys

Advantages

1. Anti-phishing: The domain-binding mechanism fundamentally eliminates phishing attacks
2. Anti-replay attack: Every authentication signature is unique
3. Data breach resistance: Servers only store the public key; public key exposure does not compromise security
4. No password transmitted: No password passes over the network during authentication
5. Excellent user experience: Biometric check completes in one step — nothing to memorize

Potential Risks

1. Device security dependency: If your device (phone) is compromised, the Passkey may be misused
2. Cloud account risk: Passkeys sync via iCloud/Google; if your cloud account is compromised, the Passkey could be exposed
3. Device loss: If all devices are lost and you cannot access your cloud account, you may lose the Passkey

Mitigation Measures

1. Keep device systems and apps updated
2. Enable strong security verification on your iCloud/Google account
3. Keep at least one traditional verification method (such as Google Authenticator) as a backup
4. Consider also using a YubiKey as additional Passkey storage

Managing Multiple Passkeys

Adding Multiple Passkeys

You can create multiple Passkeys for the same Binance account:

1. iPhone's Passkey (synced to iPad and Mac via iCloud)
2. Android phone's Passkey
3. Passkey stored on a YubiKey

It is recommended to create at least two Passkeys from different ecosystems to avoid being unable to log in due to a single ecosystem failure.

Deleting a Passkey

If a Passkey is no longer needed:

1. Go to "Security" → "Passkey"
2. Find the Passkey you want to delete
3. Tap Delete
4. Complete security verification

Note: Before deleting a Passkey, make sure you still have other login methods available.

FAQ

After setting up a Passkey, can I still log in with a password?

Yes. Passkey is an additional login option and does not remove password login. You can choose to log in with a Passkey or with the traditional password.

Will Passkey replace Google Authenticator?

Not currently. Passkey primarily replaces the password; Google Authenticator still has value as an additional security layer. Particularly for high-sensitivity operations like withdrawals, Google Authenticator may still be required.

Will my Passkey still work after switching phones?

If you use the same Apple ID or Google account, the Passkey will automatically sync to your new phone. If you switch to a different ecosystem (e.g., from iPhone to Android), you will need to create a new Passkey on the new device.

What if my phone cannot use biometrics?

You can use the device's screen lock password (PIN/pattern) to substitute for biometrics to complete the Passkey verification.

Is Passkey secure enough that I do not need other security measures?

While Passkeys are very secure, I still recommend maintaining multiple layers of security. The core principle in security is "defense in depth" — even if one layer is breached, other layers still protect you.

Summary

Passkey represents the future direction of identity authentication. It is more secure than passwords, more convenient than any traditional verification method, and comes with built-in anti-phishing protection. If your device supports it, there is no reason not to set it up. But as a technology enthusiast who values rigor, I still recommend treating Passkey as a "bonus layer" in your security system rather than a "replacement" — keep Google Authenticator and the withdrawal whitelist alongside your Passkey for the most robust protection.

Register on Binance | Download Binance APP