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    CFS flats Technology

    Seeing What the Eye Can’t. Capturing What Touch Can’t.

    CFS flats doesn’t scan a fingerprint — it reconstructs one. In three dimensions. Without contact. In under 100 milliseconds.
    The Core Principle

    Light as a Measuring Instrument

    CFS flats is powered by Bluelynes Technology® — IDloop’s patented optical system for high-resolution 3D surface reconstruction.

    The principle is called structured light projection. A precisely defined pattern of blue light is projected onto the surface of the finger. Because a fingerprint is not flat — it is a complex, three-dimensional landscape of ridges, valleys, and curvature — the projected pattern deforms as it conforms to that surface.

    A high-resolution camera captures this deformed pattern in real time. From the nature and degree of that deformation, the system mathematically reconstructs the exact 3D geometry of the fingerprint surface through triangulation — the same geometric principle used in precision engineering and industrial metrology.

    The result

    a complete 3D point cloud of the finger’s surface, built from up to eight million data points, captured in a single non-contact scan.

    The choice of blue light is deliberate. Shorter wavelengths resolve finer surface detail, giving Bluelynes Technology its micron-scale precision advantage.

    3D Capture.
    2D Compatible.
    Step 1
    Project
    A structured light pattern is projected onto the finger surface and captured as a raw scan frame containing the deformed light geometry.
    Step 2
    Reconstruct
    The captured scan data is reconstructed into a high-precision 3D point cloud, preserving the full surface geometry and ridge detail.
    Step 3
    Unwrap
    A proprietary unwrapping algorithm converts the 3D geometry into a 500 ppi grayscale fingerprint image compatible with existing AFIS, enrollment, and government-standard 2D workflows.
    Structured light projected onto a surface is deformed by its geometry. The camera captures the deformation; triangulation reconstructs the 3D shape.

    Not All Contactless Is Created Equal

    CFS flats is powered by Bluelynes Technology® — IDloop’s patented optical system for high-resolution 3D surface reconstruction.
    2D Photo
    Other
    A standard photographic approach captures only a flat image of the finger surface. While simple and accessible, it introduces major reliability issues for biometric matching and compatibility with legacy fingerprint databases.
    4 limitations
    • No absolute scale reference
    • Perspective distortion on curved surfaces
    • Strong dependency on lighting conditions
    • Possible ridge/valley polarity inversion
    2.5D
    Other
    Hybrid systems combine a low-detail 3D surface model with a high-resolution 2D texture image. This improves geometric consistency, but fingerprint detail still depends on photographic data.
    2 limitations
    • Light source dependency
    • Polarity inversion artifacts
    True 3D
    CFS flats
    CFS flats captures the fingerprint as true microscopic surface geometry rather than a reflected image. The system reconstructs the entire finger surface in high-resolution 3D before generating a standards-compliant 2D output.
    0 limitations
    • Absolute scale accuracy
    • No perspective distortion
    • Independent from ambient lighting
    • No polarity ambiguity
    • Geometrically accurate ridge structure

    Millions of Data Points. Microseconds to Capture.

    The density and speed of the Bluelynes scan sets a new benchmark for fingerprint acquisition:
    8M
    data points per scan
    13 point
    clouds per second
    100
    ms
    scan speed
    500
    ppi
    output resolution

    Built to Capture Under Any Condition

    Real-world biometric environments are unpredictable. Lighting changes. People move. Skin is dry, wet, calloused, or scarred.
    100,000 lux ambient
    Operates reliably even in direct sunlight and high-brightness environments without external light control.
    Wet
    or dry skin
    Capture quality remains consistent across varying skin moisture conditions.
    Motion
    tolerant
    Minor finger movement during acquisition does not compromise scan integrity or matching accuracy.
    All
    skin tones
    Performance is independent of skin pigmentation and surface appearance.
    Why Structured Light

    A Deliberate Choice of Physics

    Structured light is not a new concept. It has been used in industrial metrology for decades to measure surface geometry with sub-millimetre accuracy.
    Industrial Metrology Precision
    Structured light has been used for decades to measure surface geometry with sub-millimetre accuracy in industrial environments.
    Engineered
    for Biometrics
    CFS flats adapts this principle specifically for fingerprint capture — optimized for speed, throughput, and FBI certification requirements.
    Built for Real-World
    Deployment
    The passive optical architecture enables fast acquisition, scalable hardware integration, and reliable operation across diverse environments.