Why is my finger print scan not working on my s9 phone

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Android Central Question

My finger print scan not working on my s9 phone
 

Rukbat

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Feb 12, 2012
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Not working at all? Or are you getting the "scanner may be dirty" notification? That can happen if your finger isn't in the right position. (Or if you just scan the same position, over and over, when you're setting it up, then you change position just a tiny bit when you try to unlock it. Set it with the sides and tip of your finger - let it "see" your entire fingertip.)