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definitions

retinal scan

A technology for the identification of individuals that depends on the uniqueness of the pattern of blood vessels in the retinas of people's eyes.

Note

Retinal scans are one means of identification that developed rapidly following the September 11 attacks (2001).
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.