Fingerprint Digital Door Lock

Yes. Modern Kaadas fingerprint door locks use advanced biometric sensors designed to perform reliably in humid conditions. While excessive water or deep cuts on the fingertip may occasionally cause a missed read, all Kaadas models include PIN code, RFID card, and mechanical key as backup access, so you are never locked out regardless of conditions. Enrolling multiple fingers per user also significantly improves daily reliability.

All Kaadas fingerprint door locks include multiple backup access methods: PIN code, RFID card, and mechanical key override. If fingerprint recognition fails, due to a cut, very dry skin, or a dirty sensor simply use one of these alternatives to enter. It is best practice to enrol 2–3 fingers per user during setup so that a minor injury to one finger does not affect your ability to get in.

Extremely unlikely in real-world residential scenarios. Kaadas fingerprint sensors are designed to detect the live, three-dimensional characteristics of a real finger. Lifting a latent fingerprint from a surface and manufacturing a usable spoof requires specialised equipment and significant expertise, it is not a realistic risk for residential properties in Singapore. Fingerprint locks are substantially more secure than PIN codes (which can be observed) or physical keys (which can be duplicated).

 Storage capacity varies by model. Most Kaadas fingerprint locks support profiles for all typical household members. We recommend enrolling two thumb fingers per user to ensure reliable access even if one finger is injured or harder to read on a particular day. Check the individual product specification page for exact capacity per model.

For elderly users, fingerprint recognition works well in most cases. Those with very faint ridge patterns or dry skin may benefit from enrolling multiple fingers and having a PIN or RFID card as a reliable backup. For young children under 12, fingerprint ridges are still developing and may not register consistently, we recommend enrolling them on RFID card or PIN code access instead.

Fingerprint locks require deliberate contact with the sensor — you place your finger to unlock. Face recognition locks are entirely hands-free, unlocking automatically as you approach the door. Fingerprint models start at a lower price point and suit most households well. Face recognition is ideal for users who regularly have both hands full. Both offer strong biometric security; the right choice depends on your daily routine and budget.

Yes. Kaadas fingerprint door locks are compatible with standard HDB wooden fire-rated main doors with minimum thickness and fire-rated compliance requirements. Our installation team carries out a door assessment before fitting to confirm suitability and ensure the installation is fully compliant with Singapore's fire-rated door regulations.

Yes. All Kaadas digital locks purchased through kaadassg.com include free delivery and professional installation in Singapore. After your order, our team contacts you to arrange a convenient time. The technician will install the lock, enrol all fingerprint profiles, configure PIN codes, and walk you through every feature on the same visit.

 Fingerprint profiles cannot be limited to specific time windows on most models, they grant ongoing access once enrolled. For temporary access (such as for contractors or visitors), we recommend using a one-time or time-limited PIN code instead, which is available as a feature on Kaadas Wi-Fi-enabled models. This lets you grant and revoke visitor access remotely without physically modifying the lock.

Most entry-level models use standard alkaline batteries, while higher-end models may use rechargeable batteries. Battery life varies depending on frequency of use, but typically lasts several months under normal household usage. The lock displays a low-battery warning alert well in advance of depletion. An external emergency power terminal is also included, allowing you to use a portable battery pack to unlock the door if the internal batteries run completely flat.

Yes. Kaadas offers dedicated gate lock models, including the Kaadas R8GD, designed specifically for metal gate installation in HDB and landed properties. For complete perimeter security, many homeowners choose a dual-lock setup, a Kaadas fingerprint lock on the main door paired with a gate lock — both registered under the same access system. Our installation team can assess and install both in a single visit.

Fingerprint locks scan the ridge patterns on the surface of your finger. Vein recognition locks (such as the Kaadas Q9) use near-infrared light to scan the internal vein network inside your finger, which cannot be copied from the outside. Vein recognition offers an additional layer of security beyond fingerprint and is unaffected by surface conditions like cuts, moisture, or skin changes. It is the preferred choice for users seeking the highest biometric protection available in a residential lock.