We’ve been looking into reports of SteamVR Tracking interference while using the Logitech G POWERPLAY mousepad and have confirmed that there is an issue. Logitech G is currently working on a firmware update, and Valve is working with the folks at Logitech G and HTC to find the best long term solution. Until then, please unplug the USB cable from the POWERPLAY mousepad and plug your mouse in directly before using VR.
We’ve tested a variety of other wireless power systems and have not found any similar issues. That said, if you believe you’ve found a device that does cause interference, please let us know.