Idemia CBM E4 Fingerprint Module

The Idemia CBM-E4 fingerprint module is IDEMIA Public Security’s fourth-generation compact fingerprint module. It uses our IDEMIA’s patented optical technology and biometric algorithms, both acknowledged worldwide for their high levels of accuracy and performance and their exceptional robustness.

The Idemia CBM E4 replaces both the Idemia CBM E3 and Idemia CBM V3 fingerprint modules. We do have some stock of these models available, please see related product links at the bottom of this page.

Whether used for off-the-shelf or custom-made applications, the CBM-E4 offers a flexible, cost-effective solution for the fast and secure processing of high-quality fingerprint images.

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Key Benefits of the CBM E4 fingerprint module

Compact
The best, most compact optical module on the market.

Embedded processing
Embedded processing capabilities: MINEX compliant Coder & Matcher inside.

Easy integration
Easy integration of biometric functions into multiple applications.

Secure
FBI PIV IQS certification and fake finger detection available.
Extensive security features, including encryption and digital signature.

High-quality
High-quality fingerprint acquisition

The most compact optical module on the market

Its original flat design (13.65mm height), small footprint (53.7x33.7mm) and very light weight
(20g) make it the ideal component for integration into compact and mobile products.

Integrators can rapidly add the benefits of fingerprint recognition to their applications,
without having specific knowledge of biometrics.

Why optical technology?
We selected optical technology for our sensors as it has significantly more operational and accuracy advantages compared with other technologies.

High-quality fingerprint acquisition

Optical technology offers superior image quality
- High-performance sensor: 500 dpi, 256 gray levels
- Available output formats include RAW, ISO 19794-4, or WSQ-compressed (under license) images

Large acquisition surface for optimised capture and repeatable placement

The CBM-E4’s capture surface (14x22mm) ensures that the richest area on fingerprints is systematically captured time after time. Acquisition surface contributes significantly to the
overall biometric performance:
- It determines the amount of minutiae data that can be captured.
- Other, smaller sensors allow different areas of the same finger to be presented with each placement, leading to poor data acquisition, narrow areas of overlap, and matching errors.

Lessons learned from real-world deployments put into practice

- Mechanical/visual guides ensure intuitive finger placement
- Interfaces display key information to help users: live image, messages (position, pressure, etc.), and fingerprint quality score

More than a sensor: an intelligent module

While most sensors on the market are only capable of producing fingerprint images, the CBM-E4 module is also capable of processing them internally, running powerful algorithms directly on its embedded processor.

1 Image Compression using WSQ algorithm from FBI/NIST

2 Biometric Feature Extraction to generate templates
- Feature Extractor is MINEX/FIPS 201 compliant
- Proprietary, ISO 19794-2 or ANSI 378 template formats available
- Templates can be stored in CBM-E4’s internal database

3 Biometric Matching
- Matcher is MINEX/FIPS 201 compliant
- 1:1 authentication or 1:N identification
- High accuracy: The False Acceptance Rate is configurable down to 10-8 (depending on the security
requirements) and maintained regardless of number of users in database
- Fast matching (this fourth generation integrates a faster processor)

4 The CBM-E4 is capable of addressing juvenile fingers

5 The CBM implements an anti-latency feature that detects fingerprint traces reactivated under certain lighting conditions

Embedded security features

When sensitive data (image or template) needs to be shared with a Host System, the CBM-E4 module is capable of securing it before dispatching.
1 > IDEMIA Public Security’s signed certificate is loaded on every device.
2 > Secure tunneling mode can be activated before or after deployment.
3 > Up-to-date algorithms are used to protect data, and commands are sent to the host (AES-256, SHA-256).
4 > Privacy mode also allows for protection of data with only AES-256.

CBM-E4: best in series, best in class

Enhanced image quality

The CBM-E4’s extremely fine-tuned design produces a fingerprint image with FBI PIV
IQS certification.
The reference standard in terms of single fingerprint image quality (equivalent to ISO
19794-4:2011 Annex B) was defined to ensure, in particular, interoperability between
multiple solutions.

Fake finger detection
CBM-E4 detects a large panel of counterfeit fingerprints, including but not limited to
those made with latex, Plasticine, Kapton, transparent film, rubber, Play-Doh, graphite,
or paper.

Easy integration into a wide range of applications

The CBM-E4 is perfectly suited for swift integration into multiple devices and applications: ATMs, kiosks, vending machines, access control and time & attendance terminals, keyboards, printers, PoS terminals, alarm systems, mobile devices, safes, locker systems, remote controls, voting machines, etc.

Robustness
- IP65-rated sensing area (sealed against dust and liquids)
- Resistance to electro-static discharges, scratches, and shocks
- Operating conditions: -10°C to 50°C / 10% to 80% RH
- Storage conditions: -20°C to 70°C / 5% to 95% RH

Standard interfaces: USB and Serial (TTL Open-Collector)

Comprehensive Software Development Kit: MSO SDK

NB: Low-level protocol, ILV, is also available