You showed up. The seat was already here. A browser tab owns no hardware — it asks, and the OS decides what to hand over. This page asks for everything, one thing at a time, and shows you exactly what came back: what you can bring in, what you can send out, and what this particular seat will let you do with it.
Everything here runs in your tab. No network calls, no analytics, no upload — the Content-Security-Policy on this site sets connect-src 'none', so the browser enforces that rather than asking you to take our word for it. Saved profiles live in this browser's localStorage; exports download to your own disk. Nothing about your gear leaves this machine.