Biometrics.Identify Method

2/27/2008

Captures biometrics data, compares it to an array of BiometricsInformationRecords, and then returns a rank ordered array of indexes.

Namespace: Microsoft.PointOfService
Assembly: Microsoft.PointOfService (in microsoft.pointofservice.dll)

Syntax

'Declaration
Public MustOverride Function Identify ( _
    maximumFalseAcceptRateRequested As Integer, _
    maximumFalseRejectRateRequested As Integer, _
    falseAcceptRatePrecedence As Boolean, _
    referenceBirPopulation As IEnumerable(Of BiometricsInformationRecord), _
    timeout As Integer _
) As Integer()

public abstract int[] Identify (
    int maximumFalseAcceptRateRequested,
    int maximumFalseRejectRateRequested,
    bool falseAcceptRatePrecedence,
    IEnumerable<BiometricsInformationRecord> referenceBirPopulation,
    int timeout
)

public:
virtual array<int>^ Identify (
    int maximumFalseAcceptRateRequested, 
    int maximumFalseRejectRateRequested, 
    bool falseAcceptRatePrecedence, 
    IEnumerable<BiometricsInformationRecord^>^ referenceBirPopulation, 
    int timeout
) abstract

public abstract int[] Identify (
    int maximumFalseAcceptRateRequested, 
    int maximumFalseRejectRateRequested, 
    boolean falseAcceptRatePrecedence, 
    IEnumerable<BiometricsInformationRecord> referenceBirPopulation, 
    int timeout
)

public abstract function Identify (
    maximumFalseAcceptRateRequested : int, 
    maximumFalseRejectRateRequested : int, 
    falseAcceptRatePrecedence : boolean, 
    referenceBirPopulation : IEnumerable<BiometricsInformationRecord>, 
    timeout : int
) : int[]

Parameters

• maximumFalseAcceptRateRequested
  The requested FAR criterion for successful verification.

• maximumFalseRejectRateRequested
  The requested FRR criterion for successful verification.

• falseAcceptRatePrecedence
  If both criteria are provided, this parameter indicates which takes precedence. falseAcceptRatePrecedence indicates that maxFARRRequested takes precedence; falseRejectRatePrecedence indicates that maxFRRRequested takes precedence.

• referenceBirPopulation
  A collection of BiometricsInformationRecord properties against which the Identify match is performed.

• timeout
  Maximum number of milliseconds to try a successful biometric capture before failing.

Remarks

This function captures biometric data from the attached device within the allocated time-out, and compares it against a set of BiometricsInformationRecord properties in referenceBirPopulation. It then returns a rank ordered array of referenceBirPopulation indexes.

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread-safe. Any instance members are not guaranteed to be thread-safe.

See Also

Reference

Biometrics Class
Biometrics Members
Microsoft.PointOfService Namespace
BiometricsInformationRecord
IdentifyMatch