In 2022 and 2023, cybersecurity firms (including Kaspersky and Malwarebytes) flagged multiple "portable SDK" packages as trojans. Attackers repackage the legitimate zkfinger.dll but add a loader.exe that installs keyloggers or crypto-miners. Since the file is "portable," your antivirus may not scan it until it is too late.
If you absolutely must have a single-file, no-install solution, write a short script that copies the zkfinger.dll to the system TEMP folder and loads it via LoadLibrary in C#. Do not trust random ".exe" files from file-hosting sites. zkfinger sdk 50 download portable
You need one computer with admin rights. Install the SDK normally. The installer will place files typically in: C:\ZKTeco\ZKFinger SDK 5.0\ In 2022 and 2023, cybersecurity firms (including Kaspersky