The package arrived in a plain, vacuum-sealed box, devoid of the flashy branding usually found on top-tier VR gear. Leo had spent six months scouring deep-web forums for this specific "HMD Dev-Kit," rumored to be a prototype from a defunct startup that figured out how to bypass the optic nerve’s latency [1, 3]. "Cracked and ready," the seller’s last message had read.

When selecting an HMD device kit, consider the following factors: