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What is most common biometrics? Explain in brief.
The most common biometrics is as given below:
Face geometry (Photo): The computer captures the picture of your face and matches this with a pre-sorted picture.
Fingerprints (Finger-scan): When a user needs access, matching fingerprint against a template having authorized person’s fingerprints.
Hand Geometry: As fingerprints except the verifier utilizes a TV as camera to capture the picture of the user’s hand.
Blood vessel pattern within the retina of eye of person: A match is completed among the pattern of the blood vessels into retina which is being scanned and pre-stored picture of retina.
Voice (i.e., Voice Print): A match in between user’s voice and voice pattern stored onto templates.
Signature: It is matched against the prestored authentication signature.
Keystroke Dynamics: This is match of person’s keyboard pressure and also speed against prestored information.
Others: As thermography, by using a PIN and iris scan.
Volatility of memory: Non-volatile memory will received the stored information even if it is not continually supplied with electric power. It is appropriate for long-term
Determine the term- Files File maintenance is significant. Updating of files generally involves inserting, amending and deleting data. Example: A bank would amend data
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Why SRAM are said to be volatile? Because their contents are lost when power is interrupted. So SRAM are said to be volatile.
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