PRODUCT UPDATE: All Appendix F-certified products are Windows 11-ready.


Single Finger Capture Solution

More Surface Contact, Less Ridge Distortion

The Curve and eCurve (embedded version) were developed to succeed in the demanding real world conditions common in commercial applications. Deployed globally in applications where true user identity has value this proven solution includes the hardware, full featured SDK and technical support necessary to make your product more valuable. Its curved surface means more surface contact with less ridge distortion, and its underlying LES technology means it operates in direct sunlight anytime, anywhere.


  • Rapid dry finger capture
  • No need to clean latent prints in high-volume situations
  • Easy integration via single SDK for all Integrated Biometrics FBI-certified products


  • Unaffected by extreme temperatures, direct sunlight, or bright artificial lights
  • Compact, lightweight, and rugged
  • Rejects common spoofing attacks
  • Emits no bright lights during scans
  • Meets or exceeds US military durability specifications


  • Competitive pricing
  • Extremely low power consumption
  • Eliminates consumables (silicone membranes or cleaning tape)
  • Lower maintenance costs

Light Emitting Sensor Technology (LES)

Integrated Biometrics’ scanners use our patented light-emitting sensor (LES) technology to deliver fixed and mobile FBI certified fingerprint imaging in an exceptionally durable, lightweight scanner.

LES-based biometric solutions provide picture-perfect image quality in both direct and indirect sunlight and are resistant to finger contaminants such as grease, oil, water, dust and chemicals.

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Ib Curve 1
Ib Curve 2
Ib Curve 3
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Curve Specifications

OS Support & System Requirements
OS Support

Windows 7, 8, 10, 11
32 bit 64 bit
Linux 2.6 or later
32 bit 64 bit ARMv7-A ARMv8-A
Android 4.0 or later
32 bit 64 bit ARMv7-A ARMv8-A


x86 and x64 | 2.0GHz or higher ARM | 1.0 GHz or higher


512MB or higher

Images & Capture
Sensor Type





500 ppi


256 grayscale dynamic range

Image Size

288 x 352 pixels

Supported Image Formats

RAW, JPEG2000, BMP, PNG, WSQ (FBI-approved)




Min frame rate > 8fps

API Interface

Capture single finger, multi-device / multi-thread support

Quality Scoring

NFIQ v1 supported on all OSes and NFIQ2 for Windows

Weight & Dimensions
Product Weight

< 60 grams / 2.1 oz (not including cable)

Platen Size

20 mm x 28 mm / 0.79” x 1.1”

Sensing Area

15 mm x 18 mm / 0.6” x 0.7”

Scanner Assembly Dimensions

69.7 mm Ø x 33.2 mm / 2.74” Ø x 1.3”

Curve Fingerprint Scanner 3
Power & Connectors

USB 2.0, Type A

Power Source

USB Host

USB Voltage Level

4.4 to 5.25v, full scanning > 170mA, standby > 105mA


< 2.5mA *Feature not available on all models. Ask technical support for further information.

Conformance & Certifications
USB Certification


FCC/CE Comformance

FCC Part15 (per ANSI C62.4:2003) Class A, CSA ICES-003 Class A, CE Emissions: EN55022:2006 Class A, CE Immunity EN 55024:1998/A1:2001/A2:2003, IEC61000-4-2

Air Discharge / Contact Discharge

In compliance with IEC 61000-4-2

Equipment Safety

IEC 60950-1

Hazardous Material

RoHS Directive 2002/95/EC

Operating Temperature

-10°C ~ +55°C / 14°F ~ 131°F


30~85% RH < 40°C / 104°F (Non-condensing)

Storage Temperature

-40°C ~ +80°C / -40°F ~ 176°F

Surface & Systems
Ingress Protection / Water / Dust

IP65 Sealed bezel to scanning surface

Cleaning & Sanitization

For proper cleaning and disinfection of IB products, visit

Available Versions
Product Part Number Description
Curve CU312CA-000 58” USB A
Compliance & Regulations

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

  • Reorient or relocate the receiving antenna.
  • Increase the separation between the equipment and receiver.
  • Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
  • Consult the dealer or an experienced radio/TV technician for help.

Caution: Any changes or modifications not expressly approved by Integrated Biometrics could void the user’s authority to operate this equipment legally under FCC regulations.

Warranty Information

All products have a 12-month warranty starting from the date of delivery. Additional years warranties available. Inquire with your salesperson.

View Warranty



The IBScanUltimate Software Development Kit (SDK) is a set of robust tools that empower solution providers with the ability to deploy compelling LES biometric acquisition applications. The SDK includes support for a variety of operating systems and exceeds the needs of the most challenging environments.

The SDK includes Application Programming Interface (API) documentation, IB software components, demonstration applications and source code for each platform. Demonstration source code is a simple reference for integrators to rapidly develop solutions using Integrated Biometrics’ LES technologies. We encourage you to review the included materials and explore the limits of creativity when designing custom biometric solutions.

If you have any questions, please contact your Integrated Biometrics reseller or the IB team. We’ll be glad to provide assistance during solution development.

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