where it is stored and what format it is stored in fingerprint

bastianraschke / pyfingerprint

Python library for ZhianTec fingerprint sensors (e.g. ZFM-20, ZFM-60)

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where it is stored and what format it is stored in fingerprint #76

Closed KIMDOJUN-YJU closed 5 years ago

KIMDOJUN-YJU commented 5 years ago

Hi i am using a fingerprint and one question. When I register a fingerprint, I want to know where it is stored and what format it is stored. Is there any way I can see it? I'm a beginner, so thank you for the easy explanation! Thank you!

philippmeisberger commented 5 years ago

Hi. The fingerprint is just an image. When enrolling a finger the sensor extracts the characteristics from the taken image and stores it inside the internal database. Sadly the format is not documented anywhere. What we know: it has a length of 512 bytes.

philippmeisberger commented 5 years ago

I forgot to say: You can download the characteristics by the downloadCharacteristics() method. Just take a look at the samples.

bastianraschke commented 5 years ago

Also it is not an issue, so i close it.