The HPBiometricScanner object implements the methods and properties of the BiometricScanner base class that involve scanning fingerprints. It dynamically loads Hewlett-Packard support DLLs for the hp iPAQ h5500 and h5550 Pocket PC devices.
Implementation details for the HPBiometricScanner object include the following:
The ScannerType property value is implemented as a read-only value set to 8 for fingerprint scanning.
The maximum acceptable values for the FAR and the FRR are set by low-level drivers and cannot be modified by MaxFARRequested and MaxFRRRequested function calls.
An internal threshhold value is used for any comparison made by a VerifyMatch function call. The FARAchieved parameter of VerifyMatch is always -1 because the FAR/FRR ratio is not used in determining a candidate match.
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