Firewall blocking port 4370 or the device is on a different subnet. Fix: Disable Windows Firewall temporarily or add an inbound rule for port 4370. Ensure the device's IP is static.
: Due to the nature of the COM component, projects must typically target the x86 platform rather than "Any CPU" to avoid reference errors. zkemkeeper sdk
: Connect and disconnect to devices via TCP/IP or RS232/RS485 using specific passwords for secure access. User Data Handling Firewall blocking port 4370 or the device is
The ZKemKeeper SDK is a proprietary communication library developed by ZKTeco. It allows external applications to connect to, control, and extract data from biometric terminals over a TCP/IP network or USB connection. : Due to the nature of the COM
| Language | Maturity | Notes | | :--- | :--- | :--- | | | Excellent | Most common. Use DllImport for direct calls or COM interop. | | VB.NET / VB6 | Excellent | Legacy systems widely use this. | | C++ | Native | Offers finest control and memory management. | | Python | Moderate | Use pywin32 or comtypes to call the DLL. | | Java | Moderate | Use JACOB (Java COM Bridge). | | PHP | Weak | Not recommended; use a REST proxy instead. | | Node.js | Experimental | Use win32ole or child process to call a .NET wrapper. |