Multi-dynamic range technology

October 2017 Access Control & Identity Management, Products & Solutions

In contrast to fingerprint access control devices which are generally installed in a fixed position, fingerprint authentication scanners are more likely to be used in varied positions and locations.

This brings about certain challenges as a result mainly of environmental factors, in particular with regard to light (ambient light), which can influence the fingerprint capturing process and will often cause a decrease in the quality of captured fingerprint images.

In response to this challenge, Suprema developed and patented multi-dynamic range (MDR) technology, which is unique to the industry, to ensure consistency in the quality of fingerprint images regardless of lighting conditions and the moisture level of finger skin.

MDR technology is available in selected BioMini models, namely BioMini Plus 2, BioMini Combo and BioMini Slim. MDR technology delivers greater benefits to mobile authentication applications where fingerprint scanners are connected to mobile devices in varied locations and positions.

Working in a similar mechanism to HDR used by cameras, Suprema’s MDR technology makes use of a unique image processing algorithm and thereby smartly blends high-brightness images and dark images of the same object to gain optimal image quality regardless of lighting conditions.

This fingerprint image acquisition method enhances the bright and dark part of the image, producing optimal results without any loss in details. With MDR technology, BioMini scanners can produce uncompromised image quality even under direct sunlight of up to 100 000 Lux.

This same technology is used to obtain optimal images, without any problems, for both dry and wet fingers. MDR technology makes the highlights appear lighter and shadows appear darker and in this manner, fine-tuned fingerprint images are acquired in accordance with express contrast.



Credit(s)




Share this article:
Share via emailShare via LinkedInPrint this page



Further reading:

Hikvision launches AcuSeek NVR
Surveillance Products & Solutions AI & Data Analytics
By integrating natural language interaction, Hikvision’s AcuSeek NVR enables precise video and image retrieval within seconds, marking a transformative milestone for the security industry's advance into intelligent and efficient applications.

Read more...
The power of PKI and private sector innovation
Access Control & Identity Management News & Events Government and Parastatal (Industry)
At the recent ID4Africa 2025 Summit in Addis Ababa, the spotlight was firmly on building secure, inclusive, and scalable digital identity ecosystems for the African continent.

Read more...
Biometric security key for phishing-resistant MFA
Products & Solutions Access Control & Identity Management
New FIDO-compliant USB, Bluetooth, and NFC BioKeys with biometric login and centralised management for phishing-resistant, passwordless multifactor authentication (MFA) for enterprise users.

Read more...
Analyse, automate, and optimise logistics processes
neaMetrics Surveillance Transport (Industry) Products & Solutions Logistics (Industry)
In today’s rapidly evolving logistics sector, the pressure to improve process efficiency, optimise resource usage, and ensure seamless security is more intense than ever. Smart, proactive surveillance is no longer a luxury — it is a critical operational necessity.

Read more...
Gallagher Security releases OneLink
Gallagher Animal Management Products & Solutions Access Control & Identity Management
Gallagher Security has announced OneLink, a cloud-based solution that makes it faster, easier and more cost-effective to deploy security anywhere in the world, transforming how security can be delivered to remote sites and distributed infrastructure.

Read more...
Suprema unveils BioStar Air
Suprema neaMetrics News & Events Access Control & Identity Management Infrastructure
Suprema launches BioStar Air, the first cloud-based access control platform designed to natively support biometric authentication and feature true zero-on-premise architecture. BioStar Air simplifies deployment and scales effortlessly to secure SMBs, multi-branch companies, and mixed-use buildings.

Read more...
Continuous AML risk monitoring
Access Control & Identity Management Security Services & Risk Management Financial (Industry)
AU10TIX, launched continuous risk monitoring as part of its advanced anti-money laundering (AML) solution, empowering businesses to detect behavioural anomalies and emerging threats as they arise.

Read more...
Advanced surveillance storage from ASBIS
Infrastructure Surveillance Products & Solutions
From a video storage solutions perspective, SkyHawk drives, designed for DVRs and NVRs, offer high capacity, optimised firmware, and a reliability workload rating of hundreds of terabytes per year.

Read more...
The future of security: intelligent automation
Access Control & Identity Management AI & Data Analytics IoT & Automation
As the security landscape evolves, businesses are no longer looking for stand-alone solutions, they want connected, intelligent systems that automate, streamline, and protect.

Read more...
Smart automation is changing security
SA Technologies IntelliGuard Access Control & Identity Management
Security has come a long way from manual check-ins, logbooks, and standalone surveillance cameras. With the rise of intelligent automation, security is now faster, smarter, and more connected than ever.

Read more...










While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.




© Technews Publishing (Pty) Ltd. | All Rights Reserved.