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Thanks for contacting Intel customer support.
The Object recognition in the R200 camera is in preview stage and the support we can provide to it is very limited. The sample is provided as is and may not work flawlessly. The information about the object recognition been in preview stage can be found on the following link:
In the following link you will find the sample code for object recognition as provided by Intel:
The following link has a Hand toolkit for Unity, you will find the latest Unity3D package and you can also use the code as an example for your application.
Hope this information helps you.