Support for the R200 camera and its features was removed from the 2016 R3 SDK onwards. Some support continues for R200 in the open-source Librealsense SDK, though Librealsense does not have all of the official RealSense SDK's features (Person Tracking being one of the ones Librealsense lacks, I believe).
The Intel RealSense SDK For Linux does apparently provide support for Person Tracking with the ZR300 camera.
According to this chart below from the R3 release notes, you should use the previous 'RealSense 2016 R2' SDK if you need Person Tracking with the R200 camera.
If you wish to use R2, you can launch a 1.8 gb download of it in your browser automatically with the link below. I guess from your message that you have not installed R3 yet, but if you have then you should uninstall that first before installing R2.
Thank you very much. I will try R2.
Is there any reason why the person tracking feature is removed? It is a very useful feature.
Intel says it determined the feature list in 2016 R3 based on developer feedback.
Thank you sir, I downloaded this SDK 2016R2 and installed, I can see RF_PersonTracking same, but it is in c++, wondering if there is any c# sample projects?
I checked the R2 Sample Browser and there was only a C++ version of Person Tracking there, unfortunately. I checked the RealSense documentation and there is only a C++ sample listed there too.