I wonder how long the handshake takes. I imagine that the scan looks something like how CRTs work. But the triangulation back to the origin and whatnot seems li

I wonder how long the handshake takes. I imagine that the scan looks something like how CRTs work. But the triangulation back to the origin and whatnot seems like it'd take a certain amount of samples, or a pair of sufficiently-displaced sensors working in concert.