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Stop Using Your Face or Thumb to Unlock Your Phone
(gizmodo.com)
This is a most excellent place for technology news and articles.
That's not correct. It just says not recognized, and let's you try again. I just tested it. Do you have documentation that it should work the way you said and mine is faulty?
Sorry, I misremembered, it's 5 times instead of 20: more secure fingerprint unlock