Today, I tried to change the Samsung S8 unlock from face to iris. There were a few things about face unlock that were frustrating:

  • It often failed to detect a face
  • Even retrying didn’t work
  • It would unlock while entering the passcode

With iris scan, there were a few things that were a bit more appealing:

  • There’s an indicator light showing you its working
  • When it doesn’t work, it’ll give instructions on what to do to improve performance
  • It’s fast
  • It shows you what it sees so you can adjust the position

More testing needs to be down to see how it functions over time but one question: why can’t face and iris be used in conjunction for either a fall back or for more security?

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