Biometrics is becoming increasingly popular as a secure and reliable alternative to password systems. However, user psychology must be taken into account when implementing such biometric systems.
This is according to Rhys Taylor, Director of Pretoria-based PreWorX, who cautions that while there are undeniable benefits to be had through the implementation and use of biometric systems, these benefits can be eroded if there is inconsistent use of these systems due to lack of user buy-in and commitment. The move away from password-based security in favour of fingerprint recognition systems is being led by financial institutions, healthcare organisations, military and government agencies, says Taylor.
"They realise that eliminating employees' needs to maintain and update passwords saves time and money for the business. However, if users are not happy about using biometric devices, they are not likely to be consistent in using them, potentially producing a much higher than average error rate. Conversely, if users are intrigued by, and enthusiastic about, using them, they are likely to use them as intended, be more consistent and the business will enjoy relatively low error rates."
Biometrics describes automated methods of establishing someone's identity from their unique physiological or behavioural characteristics. Biometrics finger scanning involves an electronic reading of a finger to create a template against which future verifications are made.
Taylor says there can also be users who have no particular bias against biometrics, but they are nervous about using such devices: users who experience physical difficulty in using them; badly trained users; those who have a poor reference template; and those who are by nature intolerant of change.
User psychology and biometrics
"Users' temperaments, understanding and current state of mind can have a dramatic impact on real system performance," he notes. Taylor adds that 'user psychology and biometrics' as a topic is seldom considered, but it should be factored into the design and implementation of biometric systems. "One should aim for well educated users who have good quality reference templates and who are happy with the overall concept and its benefits - people who will have received proper and comprehensive training in the use of the biometric system.
"The larger the user base, the more important this becomes as the instances of 'unusual' requirements or misunderstandings increase." Taylor advises that in some public applications, such as prison visitor or benefit payment systems, there are tangible and immediate benefits to users in operating a biometric system correctly - moreover they are required to do so by the authorities. In these situations there are users who want to be verified correctly, and who may accept a methodology they would not do elsewhere. However, in corporate environments where users may have a choice in using the system, companies need to strive to make it an interesting experience, coupled with clearly defined and communicated user benefits.
In conclusion, Taylor says users should therefore be the primary focus of the system design - not the technology. "Users must be taken into account at each stage of the process and their requirements and operating experience must be carefully considered."
For further details contact Rhys Taylor, PreWorX on tel: (012) 804 0080, [email protected]
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