Are they relevant to this implementation? What I mean is this is a client-side javascript library, so it is meant to work in the browser on who knows how power

Are they relevant to this implementation? What I mean is this is a client-side javascript library, so it is meant to work in the browser on who knows how powerful hardware. There may be facial recognition libraries that work very well in real time, but how powerful of hardware is required? And the other big question, are they proprietary algorithms or open-source?