Lowest User Acceptance Level of Biometric Devices

A.

According to the cited reference, of the given options, the Retina scan has the lowest user acceptance level as it is needed for the user to get his eye close to a device and it is not user friendly and very intrusive.

However, retina scan is the most precise with about one error per 10 millions usage.

Look at the 2 tables below.If necessary right click on the image and save it on your desktop for a larger view or visit the web site directly at https:// sites.google.com/site/biometricsecuritysolutions/crossover-accuracy

Biometric Comparison Chart -

Biometric Aspect Descriptions - Reference(s) used for this question: RHODES, Keith A., Chief Technologist, United States General Accounting Office, National Preparedness, Technologies to Secure Federal Buildings, April 2002 (page 10)

and https://sites.google.com/site/biometricsecuritysolutions/crossover-accuracy.

Biometric devices are used in authentication systems to identify individuals based on their unique biological or behavioral characteristics. The level of user acceptance for biometric devices depends on various factors, including convenience, accuracy, cost, and privacy concerns.

Out of the options given, the biometric device with the lowest user acceptance level is the retina scan (option A). A retina scan is a biometric technique that uses the unique pattern of blood vessels at the back of the eye to identify individuals. The retina scan requires the user to look into a special device that captures an image of the retina. The device then compares this image to a stored database to determine if the user is authorized to access the system.

Retina scans are considered invasive and uncomfortable by many users, as the device requires the user to place their eye very close to the scanning device. Additionally, retina scans can be affected by various medical conditions, such as glaucoma or cataracts, which may make the scan unreliable. Retina scans are also relatively expensive and require specialized equipment, making them less accessible to organizations with limited budgets.

In contrast, fingerprint scans (option B) are a widely accepted and commonly used biometric device. Fingerprint scans are non-invasive and do not require the user to remove any clothing or make physical contact with the scanning device. They are also relatively accurate and can be performed quickly and conveniently. However, fingerprints can be copied or spoofed, making them less secure than other biometric devices.

Hand geometry (option C) is another biometric technique that measures the shape and size of a user's hand to identify them. Hand geometry devices are relatively easy to use and are considered non-invasive, but they can be affected by changes in hand shape due to injury or weight loss/gain. Additionally, hand geometry devices may be less accurate than other biometric devices.

Signature recognition (option D) is a behavioral biometric technique that uses an individual's signature to identify them. Signature recognition devices can be relatively inexpensive and easy to use, but they may be less reliable than other biometric devices, as an individual's signature can change over time and may be easily replicated or forged.

In conclusion, the retina scan has the lowest user acceptance level among the options given due to its invasive nature, high cost, and limited accessibility.