| 1 | Fingerprint sensing | Sensor type, scan area, recognition speed, and performance under different finger conditions vary by lock design. Capacitive sensors detect changes in electrical capacitance; optical sensors capture an image of the fingerprint. | Request sensor specifications and test results for dry, wet, worn, or aging fingerprints; confirm whether the sensor is integrated into the handle or mounted separately. |
| 2 | Fingerprint matching and spoof resistance | Matching algorithms compare captured fingerprint features with enrolled templates. Liveness-detection methods, when implemented, are intended to help distinguish a live finger from a presentation artifact. | Ask how enrollment and matching are performed, what liveness tests have been conducted, and which independent test reports support any security claims. |
| 3 | User capacity and credential management | Locks may support multiple fingerprint, PIN, or card credentials. User limits and administrator functions depend on the model and its firmware. | Check the exact capacity per credential type, how credentials are added or revoked, and whether audit records are available and retained locally or in an app. |
| 4 | Access methods and product range | Common options include fingerprint, PIN code, mechanical key, and contactless card; some models also support mobile credentials. Available combinations are model-specific. | Request a model-by-model credential matrix and confirm that included cards, keys, apps, and functions match the intended market and use case. |
| 5 | Lock and door compatibility | Product formats can include deadbolts, mortise locks, and retrofit or rim-style locks. Backset, door thickness, handing, and cylinder requirements differ across installations. | Obtain dimensional drawings and installation requirements; verify compatibility with the target door, existing lock preparation, and local building requirements. |
| 6 | Connectivity and smart-home integration | Depending on the model, connectivity may use Bluetooth, Wi-Fi, or a separate gateway. Remote access and third-party integration are not inherent features of every fingerprint lock. | Confirm supported protocols, gateway requirements, app availability by region, firmware-update policy, and whether key functions work without an internet connection. |
| 7 | Power and low-battery operation | Battery type and operating life depend on battery capacity, lock usage, radio activity, and environmental conditions. Many electronic locks provide a low-battery warning; backup power arrangements vary. | Ask for battery specifications and test assumptions, warning behavior, emergency power options, and the procedure for entry when batteries are depleted. |
| 8 | Mechanical override and fail-safe planning | Some electronic locks provide a mechanical key override or an external emergency-power contact. The presence and design of these features vary by product. | Confirm the override method, key management, emergency access procedure, and how the lock behaves during power loss or electronic failure. |
| 9 | Environmental and durability testing | Temperature, humidity, corrosion, ingress protection, and cycle-life performance depend on product construction and the tests performed. An IP rating applies only to the tested configuration and conditions. | Request test methods, reports, rating scope, and applicable certifications; check that they cover the exact model and intended installation environment. |
| 10 | Manufacturing and quality-control capability | Relevant evidence may include documented incoming-material checks, assembly controls, functional testing, traceability, change management, and final inspection. Capacity and processes must be established for each supplier. | Verify factory audit records, quality-system certificates and their scope, production capacity, sampling or 100% test procedures, defect handling, and batch traceability. |