Ensure your project is set to x86 or x64 to match the DLL you are using.
The core tasks handled by a properly deployed libzkfp.dll include:
You can access device functions using ctypes bindings or the pyzkfp GitHub wrapper . :
Digital Persona or ZK sensor drivers that allow Windows to recognize the USB device.
regsvr32 "C:\full\path\to\libzkfp.dll"
else
Do not just copy libzkfp.dll alone. It relies on internal C++ dependencies. You must copy the entire suite of companion files from the SDK's Release folder directly into your application's executable root directory (e.g., /bin/Debug/net8.0/ ): libzkfp.dll libzkfpcsharp.dll (if using .NET/C#) zkfp2.dll Step 3: Implementation in C# (.NET)
The full library package provides drivers and operational support for the following ZKTeco scanners: : Go to product viewer dialog for this item. Go to product viewer dialog for this item. SLK Series : Go to product viewer dialog for this item. Core Features
[DllImport("libzkfpdll.dll")] public static extern int ZKFPM_Init(); [DllImport("libzkfpdll.dll")] public static extern int ZKFPM_GetDeviceCount(); libzkfpdll full
: Initializes the fingerprint scanner environment.
If you are using the static .lib file, ensure your .pro file correctly points to the library. For a 32-bit build:
Note that while basic functionality works with the DLL, ZKTeco devices often require a specific license key (passed via ZKFPM_SetLicense ) to unlock features like:
Buffer overflow from missing pointer definitions or an unemptied capture frame cache. Ensure your project is set to x86 or
Necessary for C++ developers to compile their projects.
which acts as a binding to the SDK. You can initialize it using zkfp2 = ZKFP2() and capture prints with zkfp2.AcquireFingerprint() : Reference the libzkfpcsharp.dll and include the libzkfpcsharp namespace. You would typically create an instance of Initialize() before checking GetDeviceCount() : Advanced integrations for
: Ensure your project’s build target (x86 or x64) matches the architecture of the DLL you are using. Mixing a 32-bit DLL with a 64-bit application is a frequent cause of "DllNotFoundException."