All of this is completely free for 7 days.
After the trial ends, you will need to purchase a license. The price is . Compared to buying a third Vive Tracker ($129 each), Driver4VR is incredibly cheap. If you already own a used Xbox Kinect 360 ($20 on eBay) or PS3 Eye cameras ($5 each), this software turns $20 of old hardware into a $300 VR tracking solution. Driver4vr Download Free
Do not search for "Driver4VR cracked." It isn't worth losing your PC or your identity over $20. All of this is completely free for 7 days