Instructions

U.are.U SDK - Developer Guide 58
ActiveX
Capturing Fingerprints
The Capture function of the XReader class captures a fingerprint image for
• Enrollment (as part of the process described on page 12)
• Identifying users with Identify
• Verifying a specific user identity with Compare
The primary fingerprint capture methods are:
Streaming Fingerprints
Not all readers support streaming mode. To determine if a specific reader supports this feature, check the value of the
XReader property CanStream.
The streaming methods in XReader are:
Function Description
Capture Captures a fingerprint image from the open reader. This function signals the
reader that a fingerprint is expected, and blocks until a fingerprint is received,
capture fails or the reader times out.
CancelCapture Cancel a pending capture
Function Description
StartStreaming Put the reader into streaming mode. In this mode, the application must call
GetStreamImage() to acquire images from the stream.
GetStreamImage Capture a fingerprint image from the streaming data.
After this function returns, the reader remains in streaming mode.
Frame selection, scoring and other image processing are not performed by this
function.
StopStreaming End streaming mode