Definition of retinal scanner in English:

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retinal scanner

Entry from US English dictionary

noun

A biometric device that scans a person’s or animal’s retina in infrared for identification purposes.
Example sentences
  • The retinal scanner above the bridge entrance scanned Eldon's and Jon's eyes and confirmed they were allowed inside the bridge.
  • Please place your hand in the DNA scanner to your left, and place your eyes at the retinal scanner.
  • As he moseyed around, not sure what he was looking for, he saw rows of doors down the hall each one with a retinal scanner next to it.
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