Free libary for hand tracking for AR

Questions & Answers
1

Hello,
Is there a free plug in for the unity that will have hand tracking
I need it for the game.
Camera should detect a hand which will allow the user to grab the augmented object in the air.
Any suggestions are appreciated.

2

Look this: Build Augmented reality (AR) Hand Tracking Mobile Application with Unity 3D [SMILEWAY.CO] - YouTube