Vein Recognition

 A vein recognition door lock scans the unique network of blood vessels inside your finger using near-infrared light. Because these patterns are internal and completely invisible from the outside, they cannot be easily seen, copied, photographed, or lifted from surfaces. This is currently the most secure biometric access method available for residential locks in Singapore.

Kaadas digital locks range from $339 for the entry-level Kaadas R8 Rim Lock to $1,469 for the premium K70SE. The most popular HDB fingerprint models fall between $499–$899. All purchases through kaadassg.com include free delivery and professional installation, there are no hidden costs after checkout.

Yes, this is one of its most significant practical advantages. Because the sensor reads through the skin using infrared light, surface conditions including moisture, dirt, cuts, eczema, lotion, or ink have have minimal impact on recognition accuracy. It is the most condition-independent biometric access method in the Kaadas product range.

Yes. Unlike fingerprint sensors, which can struggle with faint ridges common in elderly users, vein recognition reads internal vasculature that remains consistent throughout adulthood. It is not affected by dry skin, thin skin, or age-related ridge fading. This makes the Kaadas Q9 particularly suitable for households with elderly family members.

The Kaadas Q9 is the flagship vein recognition model in the Singapore range. It combines finger vein recognition, face recognition, fingerprint, Wi-Fi app, PIN code, RFID card, and mechanical key, making it the most feature-complete digital lock in the Kaadas lineup. It supports dual unlock (door + gate synchronisation) and is fully compatible with standard HDB and condo wooden doors.

 For homeowners who want the absolute highest level of biometric security, or who live with elderly users, people who work with their hands, or anyone who experiences regular fingerprint failures, the Kaadas Q9 is worth the investment. It also includes face recognition, Wi-Fi, and dual unlock as standard, making it exceptional value for a single premium purchase.

Highly unlikely. The Kaadas Q9's vein recognition system incorporates liveness detection — it verifies that active blood is flowing through the finger at the time of scanning. An artificial or severed finger would not have active blood circulation and would be immediately rejected by the sensor, regardless of how accurately the vein pattern is replicated

Yes. All Kaadas digital locks, including the Q9 purchased through kaadassg.com include free professional installation. Our technician will install the lock, enrol all biometric profiles across all three methods, configure the Wi-Fi app, and walk you through the full feature set during the same appointment.