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Determining the best biometric reader for an application

 

This guest post was contributed by Anixter.

Biometric physical access control is the most secure means for allowing access due to the unique physical characteristics of every individual. Biometric physical access control solutions provide stronger authentication methods than a PIN, access card or physical keys, which can be lost or stolen and facilitate an unauthorized entry. Biometrics is the only credential that positively authenticates the person before he or she accesses a secure area.

There are multiple ways of using an individual’s unique characteristics as a means of access. These could include a fingerprint, finger vein scan, iris recognition, hand geometry, 3D facial recognition, video facial recognition or touchless fingerprint. Before deciding on which technology fits your application, there are four things you should consider: convenience, acceptability, speed and environment. An easy way to remember these criteria is to ask, what is the C.A.S.E. for this biometric reader?

C – Convenience (Easy to use) Can the user easily approach and present their credential or biometric?

A – Acceptability (User Acceptance & Security) How well do the users accept interfacing with the technology and how well does it meet the level of security for the risk? What is the false reject rate (FRR) and the false accept rate (FAR)?

S – Speed & Accuracy (Throughput) How quickly can the user get through the presentation process and how accurate is the technology when the credential or biometric is presented (false reject)?

E – Environment (Applications) Where is the reader being used – indoor, outdoor, lighting, vandal prone, dirty conditions, hands-free or other unique requirements?

The chart below provides a quick and easy guide to making your C.A.S.E.

TechnologyConvenienceAcceptabilitySpeedEnvironment
Fingerprint RecognitionMost widely used biometric; intuitive and easy to use; finger placed on sensor; lit with red lightThere is still some resistance to enrolling a fingerprint biometric; FAR is extremely low; FRR affects a small number of users; high quality readers reduce false rejectsThroughput is high, reads biometric in less than 1 secondIndoor, outdoor and ruggedized models
Fingerprint and VeinReader aligns finger for correct fingerprint and vein scanningCombines two biometrics into one template (dual modal) to create a high-security biometric readerReads are slower - read time is 1.5 secondsApplications where security requirements are higher and throughput is not a major concern
Iris RecognitionHands-free camera sensor is adjustable for varied heights; correct distance is required to read biometrics; the unique pattern in the human iris is formed by 10 months of age and remains unchanged throughout one’s lifetimeUser acceptance to the technology is high once they understand it is iris and not retina; this is a very high-security biometric technology – the chance of two irises being identical is 1 in 10^78It takes about two seconds to align your eyes with the reader and have it authenticate the userExcellent choice for hands-free environments; indoor use
Touchless FingerprintVery easy to use - waving hand across the sensor reads the biometricBeing touchless, the resistance to using a wave reader is low; security is adjustable; since the reader captures biometric data from one to four fingers, the security can be adjusted for lower and higher security applicationsVery fast read; users do not even need to stop walking motion to use readerIndoor environments, high-traffic entrances, high-security entrances
3D Facial RecognitionHands free - correct stance in front of the sensor is required; monitor shows placement; lower height installation is required to accommodate all usersSome resistance to presenting facial biometrics; 3D technology compares 40,000 data points for very low FARFRR and slow reads can occur for facial changes, glasses and incorrect positioning at the readerIndoor applications; best results without backlighting issues; hands free/ touchless for clean room environments
Hand GeometryThe reader is intuitive on how to place your handWell accepted as it is not taking any usable biometric data; less secure than other biometrics1:1 verification; a pin code must be used to retrieve the biometric template for verificationIndoor or outdoor with specialized enclosure; good for users with dirty/ worn hands; often used for time and attendance applications
Video Facial RecognitionLooking at the camera captures the biometric templateFRR and FAR are is higher than other biometric technologiesBest applications include uses as dual authenticationIndoor or outdoor; consistent lighting is required for the camera

The right biometric system is an effective method to identify and authenticate personnel, but it is important to remember to take into account the customer’s needs and requirements. It is not a one-biometric-technology-fits-all world, so develop your C.A.S.E. and understand the need for convenience, accuracy, speed and the environment where the system will be deployed to ensure that the customer’s expectations are met.

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