One of the questions in the Ant Manor class on March 30, 2023 is: Why is fingerprint unlocking less sensitive when using wet hands? You may not know the answer to this question, so what is the answer to this question? Now the answer is provided for everyone, let’s take a look.
Answer: Water affects current sensing
When the finger is wet, there is a film of water on the surface of the fingerprint, and this water fills the depressions between the lines. In this way, when your finger is pressed on the glass plate, there will be no alternating light and dark stripes, and the fingerprint will naturally not be recognized.
