While merely filing a patent doesn't guarantee that the tech will ever see the light of day, Sony investing in a more immersive PSVR experience makes a lot of sense. Being able to physically walk around a virtual world does wonders for creating a feeling of presence and if it makes it to market, this new device could help PSVR stand toe-to-toe with the more technically accomplished Vive.

Interestingly, the patent states that the tracking device is wireless, suggesting it would connect to a PS4 through either Bluetooth or Wi-Fi. With the competition already announcing wireless peripherals of their own, it's no surprise that Sony may be following in their footsteps.The patent gives no indication, however, whether the tracker would be an add-on for the existing headset or incorporated as a part of a PSVR successor.

PSVR was released last October. Since then, Sony has kept quiet about the tech, omitting sales numbers from end of year press releases and failing to announce many new titles for the platform at its last conference. Yet with more bundles hitting the shelves and Sony's recently released PS4 Pro offering a noticeable bump in VR performance, these patents help suggest that the company's not done with VR just yet.