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In the second part of this, I’ll describe how I fixed this problem, using the ManualResetEvent object. However, because the fingerprint sample might hadn’t been successfully scanned at that point, I got a null reference exception. So control flows straight on after the call to Enroll to the method which tries to create an image. Scanner.CreateBitmapFile( there was a problem – when designing the implementation, I hadn’t taken account of the fact that the device and SDK is driven by events – so after I start running the program, it’ll happily wait for someone to put their finger on the device screen and won’t block the main thread. using ( var scanner = new DigitalPersonaFingerPrintScanner()) DIGITALPERSONA U.ARE.U 4000B FINGERPRINT READER USB CODEThis compiled, and I expected to be able to run the code below. This seemed pretty straightforward – I wrote the class below. produtos e solucoes em biometria, projetos biometricos sob demanda, revenda digitalpersona, revenda futronic, revenda lumidigm, revenda innovatrics, veridium, kits de desenvolvimento, single sign on, leitores biometricos, controle de ponto, controle de frequencia, controle de presenca, controle de entrega de documentos, controle de entrega de epis, controle de entrega de materiais, plataforma.
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