How to Add Another Fingerprint to Eufy Lock

Adding another fingerprint to your Eufy lock is quick and easy with the right steps. This guide walks you through the entire process, from preparation to testing, ensuring secure and reliable access for family or guests.

Key Takeaways

• Prepare your lock and app: Ensure your Eufy lock is powered, connected to the EufySecurity app, and in pairing mode before starting.
• Use clean, dry fingers: Moisture, dirt, or cuts on your finger can affect fingerprint recognition accuracy during enrollment.
• Follow the app’s guided steps: The EufySecurity app provides real-time prompts to help you scan your fingerprint correctly.
• Test the new fingerprint immediately: After adding, verify it works by locking and unlocking the door to avoid future access issues.
• Limit fingerprints for security: Only register trusted individuals to maintain home security and prevent unauthorized access.
• Update firmware regularly: Keep your Eufy lock’s firmware current to ensure optimal performance and compatibility with new features.
• Use backup access methods: Always have a physical key or PIN code ready in case the fingerprint scanner fails.

How to Add Another Fingerprint to Eufy Lock

Smart locks like the Eufy Smart Lock have revolutionized home security by offering convenient, keyless entry. One of the most popular features is fingerprint recognition—allowing you to unlock your door with just a touch. Whether you’re setting up access for a family member, roommate, or trusted guest, adding another fingerprint to your Eufy lock is simple when you follow the right steps.

In this comprehensive guide, you’ll learn exactly how to add another fingerprint to your Eufy lock. We’ll walk you through preparation, the step-by-step enrollment process, best practices for accuracy, troubleshooting common issues, and tips to keep your smart lock running smoothly. By the end, you’ll be able to manage multiple users with confidence and enjoy the full benefits of your Eufy smart lock.

Why Add Another Fingerprint?

Before diving into the how-to, let’s talk about why you might want to add another fingerprint. Smart locks are designed for convenience and security, and fingerprint access is one of the fastest and most secure ways to enter your home. Here are a few common reasons to add a new fingerprint:

• Family members: Give your spouse, teen, or elderly parent easy access without sharing keys.
• Roommates or tenants: Allow temporary access with a secure, trackable method.
• Trusted guests: Let a dog walker, cleaner, or friend in when you’re not home.
• Backup access: If your primary fingerprint isn’t recognized, having a second one (like your other thumb) can save the day.

Adding fingerprints is not just about convenience—it’s also about control. You can assign names to each fingerprint, track who enters and when, and even remove access instantly if needed. With Eufy’s advanced encryption and local storage, your biometric data stays private and secure.

What You’ll Need Before You Start

Before you begin the fingerprint enrollment process, make sure you have everything ready. Rushing into setup without preparation can lead to errors or failed scans.

1. A Fully Charged Eufy Lock

Ensure your Eufy lock has sufficient battery power. Low battery can cause the lock to behave unpredictably or fail to respond during setup. Most Eufy locks run on AA batteries and will alert you via the app when power is low. If your lock is hardwired or uses a rechargeable battery pack, confirm it’s charged.

2. The EufySecurity App Installed and Updated

Download the EufySecurity app from the Apple App Store or Google Play Store if you haven’t already. Make sure it’s updated to the latest version to access all features and avoid compatibility issues.

3. Your Smartphone Connected to Wi-Fi or Bluetooth

The app communicates with your lock via Bluetooth (for direct control) or Wi-Fi (if using a HomeBase or cloud connection). Ensure your phone is within range of the lock and connected to the same network if applicable.

4. Clean and Dry Fingers

Fingerprint scanners rely on clear, readable patterns. Dirt, moisture, oil, or minor cuts can interfere with scanning. Wash and dry the finger you plan to register before starting.

5. A Quiet, Well-Lit Environment

While the lock doesn’t require perfect lighting, a calm environment helps you focus and follow the app’s instructions without distractions.

Step-by-Step: How to Add Another Fingerprint

Now that you’re prepared, let’s walk through the actual process of adding a new fingerprint to your Eufy lock. This method works for most Eufy Smart Lock models, including the Eufy Smart Lock Touch, Smart Lock C210, and Smart Lock C220.

Step 1: Open the EufySecurity App

Launch the EufySecurity app on your smartphone. If you’re not already logged in, enter your credentials. Make sure you’re on the home screen where your devices are listed.

Step 2: Select Your Eufy Lock

Tap on your Eufy lock from the device list. This will open the lock’s control panel, showing options like “Lock/Unlock,” “User Management,” and “Settings.”

Step 3: Go to User Management

Look for the “User Management” or “Access” section. This is where you can add, edit, or remove users, including fingerprint profiles. Tap on it to proceed.

Step 4: Choose “Add New User” or “Add Fingerprint”

You’ll see options to add a new user. Select “Add New User” or “Add Fingerprint,” depending on your lock model. Some models allow you to assign a name (e.g., “Mom” or “John”) to make identification easier.

Step 5: Follow the On-Screen Prompts

The app will guide you through the fingerprint enrollment process. Here’s what to expect:

• The app will ask you to place your finger on the sensor.
• You’ll need to lift and reposition your finger slightly with each scan—usually 6 to 8 times.
• The app will confirm when each scan is successful.
• Once all scans are complete, the app will save the fingerprint profile.

Step 6: Name the Fingerprint (Optional but Recommended)

After enrollment, you’ll be prompted to name the fingerprint. Use a clear, descriptive name like “Sarah – Thumb” or “Dad – Index.” This helps you manage multiple users and identify who accessed the lock later.

Step 7: Test the New Fingerprint

Before finishing, test the new fingerprint to ensure it works. Lock the door (if unlocked), then place the registered finger on the sensor. The lock should unlock within 1–2 seconds. If it doesn’t, repeat the enrollment process.

Tips for a Successful Fingerprint Enrollment

Even with clear instructions, fingerprint scanning can sometimes fail. Here are some practical tips to improve your chances of success:

Use the Correct Finger Placement

Place your finger flat and centered on the sensor. Avoid tilting or pressing too hard. The scanner needs to capture the full pattern, including edges.

Scan Multiple Angles

During enrollment, the app will ask you to lift and reposition your finger. This helps the system capture different angles and pressure points. Follow the prompts carefully—don’t rush.

Register the Same Finger Twice (Optional)

For extra reliability, consider registering the same finger under two different names (e.g., “Thumb 1” and “Thumb 2”). This gives you a backup if one scan fails due to dirt or moisture.

Avoid Wet or Dirty Fingers

Even small amounts of water, lotion, or grime can blur the fingerprint pattern. Always clean and dry your hands before scanning.

Try Different Fingers

If one finger doesn’t work well, try another. Some people have clearer ridges on their index finger, while others do better with their thumb.

Keep the Sensor Clean

Dust and fingerprints can build up on the sensor over time. Wipe it gently with a soft, dry cloth weekly to maintain accuracy.

Troubleshooting Common Issues

Sometimes, adding a fingerprint doesn’t go as planned. Here are solutions to the most common problems:

“Fingerprint Not Recognized” During Enrollment

If the app says your fingerprint isn’t recognized, try these fixes:

• Clean the sensor and your finger.
• Ensure your finger covers the entire sensor.
• Slow down—don’t lift your finger too quickly between scans.
• Try a different finger or hand.

App Freezes or Crashes

If the EufySecurity app becomes unresponsive:

• Close and reopen the app.
• Restart your phone.
• Check for app updates in the app store.
• Ensure your phone’s operating system is up to date.

Lock Doesn’t Respond to New Fingerprint

After adding a fingerprint, it still doesn’t work? Try this:

• Re-enroll the fingerprint from scratch.
• Check if the lock is in “Guest Mode” or has access restrictions.
• Verify the user hasn’t been deleted or disabled in the app.
• Restart the lock by removing and reinserting the batteries.

Bluetooth or Wi-Fi Connection Issues

If the app can’t communicate with the lock:

• Move closer to the lock (within 10–15 feet).
• Ensure your phone’s Bluetooth is on.
• Restart your router if using Wi-Fi.
• Re-pair the lock in the app if necessary.

Firmware Out of Date

Old firmware can cause compatibility problems. To update:

• Open the EufySecurity app.
• Go to “Device Settings” > “Firmware Update.”
• Follow the prompts to install the latest version.

Managing Multiple Fingerprints

Once you’ve added several fingerprints, it’s important to manage them properly. The EufySecurity app makes this easy.

View All Registered Fingerprints

Go to “User Management” to see a list of all enrolled fingerprints. Each entry shows the name, access level, and last used time.

Edit or Rename a Fingerprint

Tap on any fingerprint profile to rename it or change its access permissions. For example, you can set a guest fingerprint to only work during certain hours.

Delete a Fingerprint

If someone no longer needs access, delete their fingerprint immediately. Select the profile and tap “Delete” or “Remove User.” This is crucial for security—don’t leave old profiles active.

Set Access Schedules (If Supported)

Some Eufy locks allow time-based access. For example, you can let a cleaner enter only between 9 AM and 5 PM on weekdays. This adds an extra layer of control.

Monitor Access Logs

The app logs every entry, including which fingerprint was used and when. Review these logs regularly to spot unusual activity.

Security Best Practices

While fingerprint access is convenient, it’s important to use it safely.

Limit the Number of Fingerprints

Only register people you trust. Each fingerprint is a potential entry point. Avoid adding too many users—stick to family and essential guests.

Use Strong Backup Methods

Always set up a secure PIN code and keep a physical key accessible (but hidden). If the fingerprint scanner fails, you’ll still be able to get in.

Enable Two-Factor Authentication

In the EufySecurity app, turn on two-factor authentication (2FA) to protect your account from unauthorized access.

Regularly Review User Access

Every few months, review who has access to your lock. Remove fingerprints for people who no longer need entry.

Keep the Lock Updated

Firmware updates often include security patches. Enable automatic updates if available, or check monthly for new versions.

When to Contact Eufy Support

Most issues can be resolved with the steps above. But if you’re still having trouble, don’t hesitate to reach out to Eufy support.

Contact them if:

• The fingerprint scanner stops working entirely.
• You can’t add or delete users in the app.
• The lock behaves erratically (e.g., unlocking on its own).
• You suspect a hardware defect.

You can contact Eufy via:

• The “Help” section in the EufySecurity app.
• Their official website: support.eufylife.com
• Email or live chat (available during business hours).

Be ready to provide your lock model, app version, and a description of the issue.

Conclusion

Adding another fingerprint to your Eufy lock is a simple yet powerful way to enhance both convenience and security. With just a few taps in the EufySecurity app, you can grant access to trusted individuals without compromising control. By following the steps in this guide—preparing properly, enrolling carefully, and managing users wisely—you’ll get the most out of your smart lock.

Remember to keep your lock clean, your app updated, and your access list current. Test new fingerprints right away, and always have a backup plan. Whether you’re adding a fingerprint for your partner, child, or housekeeper, doing it right ensures smooth, reliable access for years to come.

Your Eufy lock is more than a door mechanism—it’s a smart guardian for your home. Use it wisely, and enjoy the peace of mind that comes with modern, secure living.