Retina scan by Shady Amanbay https://padlet.com/amanbayshady1/retinascan Made with smile en-us 2017-03-29 08:17:46 UTC 2025-12-02 16:11:40 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Terminator.png Retina scan amanbayshady1 https://padlet.com/amanbayshady1/retinascan/wish/163345400 Retina scanners are used to record the pattern of blood vessels at the back of someone's eye. As everyone has different pattern of vessels, retina scanners can be used to uniquely identify people.]]> 2017-03-29 08:27:45 UTC https://padlet.com/amanbayshady1/retinascan/wish/163345400 amanbayshady1 https://padlet.com/amanbayshady1/retinascan/wish/163346551 Retina scanning is a biometric verification technology that uses an image of an individual’s retinal blood vessel pattern as a unique identifying trait for access to secure installations.]]> 2017-03-29 08:32:47 UTC https://padlet.com/amanbayshady1/retinascan/wish/163346551 amanbayshady1 https://padlet.com/amanbayshady1/retinascan/wish/163346637 Retinas scans are about 70 times more accurate than iris scans and 20,000 times more accurate than fingerprint-based methods. However, a retina scan does require the subject to focus on a single point for the entire 15-second duration.]]> 2017-03-29 08:33:13 UTC https://padlet.com/amanbayshady1/retinascan/wish/163346637 Advantage amanbayshady1 https://padlet.com/amanbayshady1/retinascan/wish/163346711 a. Very high accuracy.
b. There is no known way to replicate a retina.
c. The eye from a dead person would deteriorate too fast to be useful, so no extra precautions have to been taken with retinal scans to be sure the user is a living human being.
]]> 2017-03-29 08:33:38 UTC https://padlet.com/amanbayshady1/retinascan/wish/163346711 Disadvantage amanbayshady1 https://padlet.com/amanbayshady1/retinascan/wish/163346765 a. Very intrusive.
b. It has the stigma of consumer's thinking it is potentially harmful to the eye.
c. Comparisons of template records can take upwards of 10 seconds, depending on the size of the database.
d. Very expensive.
e. Measurement accuracy can be affected by a disease
]]> 2017-03-29 08:33:57 UTC https://padlet.com/amanbayshady1/retinascan/wish/163346765 amanbayshady1 https://padlet.com/amanbayshady1/retinascan/wish/163346886 Since each person’s retina is unique, the scan offers security akin to a fingerprint -- only retinas cannot be copied. The scanner emits a low-level beam of light to illuminate the back of eye while the user looks into a small eyepiece for about 30 seconds. The light isn’t harmful to the eye; it’s the same technology that ophthalmologists use when checking for glaucoma, or that hospitals use in scanning for diabetes.]]> 2017-03-29 08:34:37 UTC https://padlet.com/amanbayshady1/retinascan/wish/163346886 The overall retinal scanning process may be broken down into three sub-processes: amanbayshady1 https://padlet.com/amanbayshady1/retinascan/wish/163346986 1. Image/signal acquisition and processing :-this sub-process involves capturing an image of the retina and converting it to a digital format.
2. Matching:- a computer system is used to verify and identify the user (as is the case with the other biometric technologies ).
3. Representation:- the unique features of the retina are presented as a template.]]> 2017-03-29 08:34:58 UTC https://padlet.com/amanbayshady1/retinascan/wish/163346986