The Fingerprint Recognition Only Seems to Work Occasionally
The fingerprint reader on SDL smart locks is usually very reliable. If you are able to register new fingerprint, it means you're fingerprint reader is working.
Sometimes if there is dust or residue on the sensor or if your finger is oily, unclean or wet this can impact the recognition. If this is the case we recommend cleaning the sensor and your finger with a dry cloth.
If your fingerprint recognition works inconsistently, you can also try the following:
Adjust Finger Placement
During the fingerprint setup, experiment with different positions and angles of your finger to help the sensor capture more details.Register the Same Finger Multiple Times
Register the same finger at least three times, each time slightly shifting the area of your finger being scanned. This provides broader coverage and increases recognition reliability. Watch this YouTube video https://www.youtube.com/shorts/T2lWBBQoNisAdd Additional or Alternate Fingers
If one finger isn’t consistently recognised, register another finger to see if it performs better. You can also set up multiple fingers for added convenience.
Other reasons why your fingerprint recognition may not work reliably.
Low battery
Low battery could impact fingerprint recognition. Replace the batteries with brand new high quality batteries.
Faulty/rusty battery terminal or Loose cable
Power up the lock with a fully charged power bank or a computer using the USB charging port (micro USB or USB C) on the front panel and check if the fingerprint recognition works. If it does, it could mean there's something stopping the battery power from coming through to the front panel. Refer to this article.
Check if the battery terminal is broken or there's rust present. Also check if the cable connecting the two lock panels is securely plugged in. Depending on the lock model, the connector plug might be located in the battery compartment, allowing you to tighten it without uninstalling the lock. In other cases, the plug may be tucked away in a cavity, necessitating lock removal for proper fastening.
Power up the lock with a fully charged power bank or a computer using the USB charging port (micro USB or USB C) on the front panel and check if the fingerprint recognition works. If it does, it could mean there's something stopping the battery power from coming through to the front panel. Refer to this article.
Check if the battery terminal is broken or there's rust present. Also check if the cable connecting the two lock panels is securely plugged in. Depending on the lock model, the connector plug might be located in the battery compartment, allowing you to tighten it without uninstalling the lock. In other cases, the plug may be tucked away in a cavity, necessitating lock removal for proper fastening.
Firmware not up to date
Firmware updates for smart locks are crucial software improvements that fix bugs, boost security, enhance performance (like battery life, motor control, connectivity, fingerprint recognition), and add new features, ensuring the lock stays modern and reliable without needing hardware replacement, usually installed through the lock's app over Bluetooth while the phone is nearby.
Lock is stuck
If the lock becomes stuck during operation, it may not function correctly.
If the lock becomes stuck during operation, it may not function correctly.
- Follow the instructions in the article to reset the lock and restore normal operation.
- If that doesn't fix the issue, uninstall the TTLock app and reinstall it.
If the steps above do not solve the problem, please send us the following.
1. Short video demonstrating the issue
1. Short video demonstrating the issue
2. Screen shot of the app showing the battery level
3. Video of testing the lock with USB power
4. Screen shot of the app showing the firmware is up to date
5. Are you able to register new fingerprints?
Related Articles
How does the privacy switch work?
Some of our smart door locks come with a 'Privacy Switch'. The Privacy Switch adds a layer of security by restricting access and/or non-admin users. And this functionality varies from model to model. SDL-H1 & SDL-H2 How does it work when it's turned ...I've followed the instructions for setting up my fingerprints, but it doesn't seem to be working. What should I do?
If you're encountering problems with the fingerprint recognition feature, try the following troubleshooting steps: Clean the fingerprint reader with a microfiber cloth. If the issue persists, move on to the next steps. Replace the batteries: Weak or ...Why does my door always open from the outside?
Prerequisites: 1. Make sure the smart door lock is powered up using fresh batteries. If it doesn't power up, refer to the Why is my Smart Door Lock not powering up? article. 2. Make sure the lock is configured (see this article to configure the ...Latch will not extend to lock or even hold the front door closed
Read before you start troubleshooting. If the troubleshooting steps in this article do not resolve the issue, please send us the following so we can assist you further. You are welcome to capture the necessary images and recordings as you work ...Keypad flashing and not recognising PIN/passcode
Read before you start troubleshooting. If the troubleshooting steps in this article do not resolve the issue, we will ask you to provide a few photos and short videos so we can assist you further. You are welcome to capture the necessary images and ...