Wearing Trackers

This is the reference page for placement. Get this right and your tracking will be solid. Get this wrong and every reset will fight you.

The good news: SlimeVR’s mounting calibration is forgiving about exact rotation. As long as the tracker is on the right body part and roughly flat against the limb, the wizard figures out the rest.

Infographic by Spazzwan, used with permission.

General rules

1. Mount trackers where muscle movement won’t shift them. You want the tracker to follow your bones, not your soft tissue. Pick the spot on each limb where flexing the muscle nearby moves the tracker as little as possible.
2. Snug, not tight. A tracker that slides during use will confuse the server every time you move.
3. USB port faces down (for limb-mounted trackers). This keeps the tracker oriented consistently and makes the button easy to find.
4. Use the placement stickers from the box to label each tracker with its body part, so the same tracker goes to the same place every session.
5. Don’t worry about perfect rotation. Mounting calibration handles offsets.

Lower body (Core kit and up)

Thigh

• Position: mid-thigh, on the side or front of the leg, where flexing the quad shifts the tracker as little as possible
• Orientation: USB port toward the foot
• Tightness: firm enough that flexing the quad doesn’t shift it

Lower leg / ankle

• Position: on the lower leg — just above the ankle, or on the calf below its widest part — wherever flexing shifts it least. The 30 cm “ankle” strap in your kit fits either spot. SlimeVR’s guide says the ankle tracker can face any direction.
• Orientation: USB port toward the foot
• Tightness: snug; lower legs shift less than thighs so this is forgiving

Hip / waist

• Position: on the lower back, just above the tailbone, centered
• Orientation: USB port down
• Tightness: the strap goes around the waist; tighten until it doesn’t ride up or down when you twist

This is the placement VYRO VR recommends for the hip strap. SlimeVR’s upstream guide also allows the front or side at belly-button level — either works as long as you run mounting calibration afterwards and keep it consistent between sessions.

Upper body

Upper arm

• Position: as close to the elbow as possible, on the upper arm (above the elbow joint, not on it)
• Orientation: flat face up toward the ceiling when you T-pose (arms held straight out to the sides)
• Tightness: snug; arms move a lot, so err on the firmer side

Per SlimeVR’s guidance, the upper-arm tracker goes “above the elbow, on the side or back” with the “front” face toward the ceiling when T-posed.

Chest

• Position: on the chest via the chest harness. Higher is better — toward the upper chest, above the bust, not low on the ribs. Keep it consistent between sessions.
• Orientation: USB port down

Feet

If you have the Foot Tracker Upgrade Kit:

• Position: top of the foot (instep) — only. Do not mount foot trackers on the shin or ankle.
• Orientation: “up” face toward the ankle, “front” face toward the ceiling — per SlimeVR’s mounting guidance
• Tightness: snug but not painful; remember you’ll be walking

Final sanity check

Once everything’s strapped on, look at the SlimeVR Server window. Each tracker should be live (orientation arrow moving in real time when you rotate the body part). If something doesn’t move when you expect, you’ve put the wrong tracker on that body part — re-assign in the Assigning Trackers step.

Then run mounting calibration (details) to lock in orientation. You’re good.