Nobody will ever see this response since the article was posted 3 days ago but: Another advantage of doing it this way is that the sender can downsample on lar

Nobody will ever see this response since the article was posted 3 days ago but: Another advantage of doing it this way is that the sender can downsample on large/gross movements that would render faithfully as splines with fewer points, and send more samples on tight movements. If you're not sending uniformly-spaced (in time) samples, though, you'll want some kind of timing information encoded as well.