The Ollo SDK follows one simple flow:

Everything runs locally and requires no calibration.
Create a developer account Grants access to builds for Unity, Unreal, Godot, and native C++.
Download the SDK for your engine Once you sign up, you'll get direct engine-specific download links in your dashboard. Each build includes headers, binaries, and a tiny example scene.
Grab your license key Keys are engine-agnostic and work locally, offline, and per-machine.
Everything is on-device. Everything is frame-accurate. Everything is built for real games.