Why won't my fingerprints take?

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Offline thedoc

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Why won't my fingerprints take?
« on: 11/04/2014 17:30:01 »
Pauline asked the Naked Scientists:
   I want to know why my fingerprints won't take?

Really enjoy your programme,
What do you think?
« Last Edit: 11/04/2014 17:30:01 by _system »

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Offline evan_au

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Re: Why won't my fingerprints take?
« Reply #1 on: 12/04/2014 13:07:26 »
I'm not sure what the question means by "fingerprints won't take"...?

Once when I was passing through immigration, I was asked to scan my fingerprint.
It didn't read properly.
The previous person had left a smear of something greasy on the reader, but it gave a clear image after a wipedown with tissue paper.