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Management wishes to add another authentication factor in addition to fingerprints and passwords in order to...

Management wishes to add another authentication factor in addition to fingerprints and passwords in order to have three-factor authentication. Which of the following would BEST satisfy this request?

  • Retinal scan
  • Passphrase
  • Token fob
  • Security question
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Answer #1

If equipment exists for example, inside company or office if you are able to establish then retinal scan is the best authentication but this fails in case of force logins like an intruder behaving rude to user and getting the retina scanned. If token fob is used, then anybody with the kit can get in easily, hence not recommended. Security question answer has the probability of answering more if the intruder knows the user well. Hence pass phrase can be used, which even exposed unknowingly hard to remember even it is impossible to guess such huge combination. It cannot be stolen as it is remembered unlike retina and token fob. Hence retina is good in case if equipment is good and authentication is done in open areas, else passphrase is much helpful

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