have a question about FP

How long does FP become expired? Why we need to take second or even third FP? Do our fingerprint changes during the days? WE have take code 3, but do not know whether we will need second FP?

Thanks

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这个问题,以前小白兔儿回答过。 -知名度比较高- 给 知名度比较高 发送悄悄话 知名度比较高 的博客首页 (146 bytes) () 07/11/2006 postreply 10:58:36

it should be 15 months instead -laoyanhunhua- 给 laoyanhunhua 发送悄悄话 (0 bytes) () 07/11/2006 postreply 11:04:18

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