I have designed a Payroll System with employees records and there pictures in the database and is working fine. Now, I want to add a fingerprint enrollment and verification module, which will enroll a new employee and also verify existing ones. I learn that I need a fingerprint SDK to do that. I got a fingerprint SDK but I dont know where to start. Can anyone help with a sample code or reference link to sample codes?
FingerPrint Verification
- Thread starter aakwami
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Do you have some sort of "fingerprint" device? Does it have some software/sdk and can you link it with vba/.net or something?
How long have you been planning the "fingerprint" addition to your application?
How long have you been planning the "fingerprint" addition to your application?
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In general, a fingerprint scanner is either an image comparator or a topology analyzer (sometimes a little bit of both). But in every case you have to figure out how to call the components of the SDK.
You need to read the theory of operation of the software, which will tell you what you actually do with the software. I would think you absolutely MUST have a scanner device as well.
The essence of it will be that you would do a "capture" of the print by triggering the scanner's camera-like component. You would then have the software try to develop some information from the image by identifying the central whorl or loop and subsequently identifying dermatographic feature locations relative to the central point. That should be pretty much built-in software for the scanner to be practical to use. After that, you would be able to develop a "characteristic" of the print, which is an encoded string that describes the features of the print. (If you were a mathematician working with a matrix, you would call that characteristic an eigenvalue.)
Fingerprint comparison would then be a matter of actually comparing the characteristic strings. The more features located in the characteristic string the more likely you will be able to find a unique match. However, you might wish to do some serious reading on the subject first, based on the old programmer's rule that if you couldn't do it on paper, you won't be able to do it in Access. (I.e. if you don't understand the process will enough to draw a diagram, how would you ever program it?)
You need to read the theory of operation of the software, which will tell you what you actually do with the software. I would think you absolutely MUST have a scanner device as well.
The essence of it will be that you would do a "capture" of the print by triggering the scanner's camera-like component. You would then have the software try to develop some information from the image by identifying the central whorl or loop and subsequently identifying dermatographic feature locations relative to the central point. That should be pretty much built-in software for the scanner to be practical to use. After that, you would be able to develop a "characteristic" of the print, which is an encoded string that describes the features of the print. (If you were a mathematician working with a matrix, you would call that characteristic an eigenvalue.)
Fingerprint comparison would then be a matter of actually comparing the characteristic strings. The more features located in the characteristic string the more likely you will be able to find a unique match. However, you might wish to do some serious reading on the subject first, based on the old programmer's rule that if you couldn't do it on paper, you won't be able to do it in Access. (I.e. if you don't understand the process will enough to draw a diagram, how would you ever program it?)
I have two scanners (DigitalPersona and SecuGen) I also have the SDK that supports both my scanners and I installed the scanners. But what I dont know is how to link it to verify the fingerprints. I need a sample code for enrolling and verifying fingerprints either in VBA or alternative.
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