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Connect to a biometric device connected to the server

I have been working with a biometric device for quite some time. I could always connect a biometric device and extract data from it. But this time I gave a very old device (Pegasus PB-7), which is connected to the server. I am only given a remote desktop connection and access to a biometric device. The problem I am facing is that the software is already installed on the remote desktop, and when I provide the Ip and the port to which it connects in seconds. But when I use zkemSdk, which I used to connect to other devices, it does not connect, and the following method returns -7 to me.

int idwErrorCode = -1;
this.objCZKEM.GetLastError(ref idwErrorCode);

This code is not listed in the SDK manual. I can ping the device and work with telnet. Please give some guidance on what might be the problem.

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2 answers

You mentioned objCZKEM , so I assume you are using a Zkteco brand biometric device.

If you want to connect to a biometric device located in a remote location, you will need a few things:

  • To do this, you will need a public IP address (as a rule, biometric devices can be used on a network using a local IP address, but here you are trying to access a device located on a remote network).
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zk- , ADMS zk-. WDMS, . camsunit.com, ; . API, Web API, http://camsunit.com/application/biometric-web-api.html

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Source: https://habr.com/ru/post/1017158/

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