Hand Recognition

Hello,

I'm developing an application with unity,
But I am faced with a problem that is no less,
I seek to detect hands with vuforia (or any other system)
Also it would have to work with a webcam or a camera without any specific hardware,
But I can not help you?

This is very important because it is the basis of my project,
I hope to be able to count on your help,

Regards,
Nicolas