Integrated Biometrics Curve


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Integrated Biometrics Curve is a highly accurate mobile fingerprint scanner. Curve’s accuracy stems from its hybrid sensor technology. IB Curve fingerprint scanner is equipped with LES (Light Emitting Sensor), which brings unparalleled performance and security.


Curve is a single fingerprint capture device from the house of Integrated Biometrics, a reputed brand in global biometric industry. IB Curve fingerprint scanner’s compact form factor and nicely designed housing makes it hard to ignore. Curve, however, is as efficient inside as it is beautifully designed outside.

IB Curve fingerprint scanner’s design and ergonomics may make you think that it is more focused on aesthetics to make it look appealing. However, when you go through its specifications, you would be pleasantly surprised to know that is one of a few scanners that offer a hybrid fingerprints sensor.

IB Curve fingerprint scanner comes equipped with an LES (Light Emitting Sensor) film based fingerprint sensor as well as capacitive fingerprint sensing ability. Light Emitting Sensor technology alone takes the Integrated Biometrics Curve miles ahead of competition, while capacitive sensing makes it further efficient.

Hybrid (Capacitive + LES film) fingerprint sensor

Integrated Biometrics Curve comes equipped with a hybrid fingerprint sensor that makes use of optical as well as capacitive sensing of fingerprints. Capacitive fingerprint sensors are known for their compact size and are widely used in mobile and portable devices such as smartphones, tablets, etc. Since they require human skin’s capacitance to work, their performance may be affected by wet or dirty fingers. On the other hand, optical sensor offers proven reliability in capturing fingerprints.

Both the fingerprint sensing technologies have their own set of pros and cons and when they come together, they fill the gaps of each other and bring the best of both the technologies.

That is not all, the sensor surface of this mobile fingerprint scanner is curved, which is perfectly in line with the natural curvature of human finger. When the finger is placed on the sensor surface, curved sensor surface allows more fingerprint area  to come in contact with the sensor. It allows IB eCurve to capture more fingerprint details resulting in more reliable fingerprint matching and security.

Light emitting sensor technology

The optical sensor found in eCurve mobile fingerprint scanner is not an ordinary optical sensor. It uses LES film based sensor technology, which is far ahead of its traditional prism based counterparts. Prism based optical sensors are the earliest sensors that were designed to captured fingerprints as automation in fingerprint recognition started taking shape.

Since then, optical sensors have been used in fingerprint scanners, which are still common. They are, however, suffer from many shortcomings that affect the performance and render them hard to maintain.

The LES film based sensor found in IB Curve mobile fingerprint scanner takes an entirely different approach to capture fingerprint images. Integrated Biometrics’ sensor technology is based on an electroluminescent (LES) film. This film contains phosphorous luminescent microparticles dispersed across the film.

When finger is placed on the sensor surface, these luminescent phosphorus microparticles glow wherever the friction ridges come in the contact of the LES film. This luminance takes place because the finger skin’s capacitance helps LES film complete a low level electric circuit required for it. This narrow wavelength light illuminates the pattern of friction ridges and produces a high resolution image, which is captured by a digital TFT (Thin Film Transistor) or CMOS camera. The resultant image has the resolution of 500 pixels per inch.

Hardware based liveness detection

Light Emitting Sensor technology in the IB Curve mobile fingerprint scanner inherently offers immunity against spoofs and fake fingerprint attacks. With LES film, there is no need to introduce additional liveness detection measures. The Light Emitting Sensor found on eCurve mobile fingerprint scanner only responds to human skin as it require finger skin’s capacitance to illuminate the phosphorus microparticles in the LES film.

Most fingerprint recognition systems make use of different liveness detection approaches to make sure their security is not compromised by spoofs or fake fingerprints. These approaches include additional hardware for liveness detection or software algorithms that can analyze a captured image to make sure that the fingerprint sample comes from a real finger and not a spoof.

If an imposter tries to circumvent Curve’s security with fake fingerprints made with silicone, paper, glue, latex, film or similar material. The LES sensor will not even respond to it. So fake fingerprints are rejected even before they are scanned. This is unlike most other software based liveness detection approaches, in which the scanners scan first and the underlying liveness detection algorithm analyze the print to be real.

Immune to latent and leftover prints

On the other hand, LES film based sensors does not depend on visible characteristics. They rather work on capacitance of friction ridges that illuminate the phosphorous microparticles in the LES film sensor. It results in microparticles glowing in exact fingerprint pattern which is instantly captured by a TFT / CMOS camera. Even if your finger skin is dry, dirty or stained, LES sensor will have no problem scanning it because they work with physical contact based illumination rather than taking a photo of visible features.

When there are leftover or latent prints on the scanner surface, the scanner camera captures them along with fingerprints. It results in performance related problems such as enrollment issues, false rejections, etc. To overcome this, prism based optical scanners need to be cleaned before performing a fresh scan to rule out any performance glitches.

If you have ever gone through high volume fingerprint scanning with an optical scanner, you must have witnessed that the operators clean the scanning surface after each scan. They do it because they do not want latent prints (left by previous scans) to disturb the next scan. This issue is found in optical sensors that are manufactured using a prism and make use of total internal reflection (TER) to capture fingerprints.


  • One the few scanners in the market that come equipped with hybrid sensors to ensure high quality fingerprint image capture. Hybrid sensor ensures high level of precision in fingerprint capture and decision making.
  • LES (Light Emitting Sensor) film technology ensures improved performance, accuracy and security.
  • Compact and ergonomically designed mobile fingerprint scanner that occupies a very little space. Developed specially for mobile as well as desktop applications.
  • Hardware based liveness detection ensures immunity against spoofs and fake fingerprint attacks.
  • No need to clean the sensor surface as LES film sensor rules out latent and leftover prints.
  • Highly power efficient with capture state maximum current at 110mA.

Twofold Biometric Security in One Scanner!

curve single fingerprint capture device

Integrated Biometrics Curve mobile fingerprint scanner is one of the few scanners that come with a curved sensor. Its sensor surface is curved to match the natural curvature of human finger. Curve’s curved sensing surface covers larger skin area for undistorted finger scan.


IB Curve makes use of a hybrid fingerprint sensor, which makes use of capacitive and optical (LES based) fingerprints scanning technologies. It gives Curve an edge over competition in high quality fingerprint scanning.


IB Curve fingerprint scanner is designed to be highly power efficient and keeping it up 24×7 will not have any significant impact on your power consumption. Light Emitting Sensor is already a sensing technology that consumes a very less power.


With curve, your identity authentication becomes as easy as touch-and-go. The device is equipped with a sensor to detect presence of human finger on the scanner’s sensing surface. The device automatically turns on and start scanning as soon as it detects a finger placed on it.


Curve comes loaded with Integrated Biometrics’ patented Light Emitting Sensor (LES) film, which allows it to capture fingerprints from dry, moist, and even dirty fingers. Curve promises to perform where traditional scanners fail. LES technology also helps rule out residual latent prints.

Technical Specifications

Interface USB 1.1 and USB 2.0
Housing dimensions 70 mm x 33 mm
Image resolution 500 DPI
Finger rotation flexibility +/- 30 degrees
Operating temperature -10ºC to 50ºC
Power supply voltage 4.5 – 5.5v
Capture state current 110mA maximum
Power-up initialization 210 ms
ACTIVE X and .NET control Included
Image compression WSQ
Part number IBHLMU500-03A
Type Light Emitting Sensor (LES) electroluminescent film
Image quality scoring method NFIQ
Image processing / matching algorithms IB developed and supported – no third party technologies
Capture area 15mm x 18mm
Weight 0.2 kg
Image size 288 x 352 pixels
Multi-color leds Green / Red / Blue
Storage temperature -30ºC to 80ºC
Idle state current 100mA maximum
USB cable length 1.5 meter
Matching speed 1:30,000 in 1 second
FAR / FRR (adjustable) 0.00071% / 0.00819% (default setting)
USB drivers Microsoft certified
Minimum current No power draw when sensor is off
Live finger sensing Intrinsic to LES image generation technology
Type Light Emitting Sensor (LES) electroluminescent film
Image quality scoring method NFIQ
Image processing / matching algorithms IB developed and supported – no third party technologies
Capture area 15mm x 18mm
Weight 0.2 kg
Image size 288 x 352 pixels
Multi-color leds Green / Red / Blue
Storage temperature -30ºC to 80ºC
Idle state current 100mA maximum
USB cable length 1.5 meter
Matching speed 1:30,000 in 1 second
FAR / FRR (adjustable) 0.00071% / 0.00819% (default setting)
USB drivers Microsoft certified
Minimum current No power draw when sensor is off
Live finger sensing Intrinsic to LES image generation technology


  • Integrated Biometrics is a one of the leading global provider of fingerprint sensors serving a wide variety of industries and customers.
  • IB’s end-to-end biometric solutions have earned it a reputation for high quality products.
  • More than 9 years of experience of wide variety of biometric products around the globe.
  • Integrated Biometrics follows a stringent manufacturing and quality control process to ensure that each product is manufactured and tested using the industry’s best practices.
  • Patented LES film technology makes IB products stand apart.

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Supported Software

Fingerprint SDK

Zero learning curve for developers. No biometric programming experience required. Get access to sample codes in multiple languages including C/C++, C#.NET, Java etc.


Computer Logon

Logon to Windows, Domain, Websites and Applications using fingerprints. Enterprise Password Management with Seamless Interface to Active Directory.


Great Warranty

All our products come with one year warranty. For items within the warranty period, our policy is simple and uncomplicated.

Best Price Guarantee

Our prices are unbeatable. Our ‘lowest price guarantee’ ensures that our customers get the lowest competitive price in the market.

Worldwide Shipping

No matter where you are located, we will deliver to your doorstep. International customers save up-to 60% on shipping costs.