Earlier quoted context omitted.
Well, you can see the LED blinking if you look at it straight on, but I guess it may bleed into the visible spectrum.
That's pretty fascinating if you can see it. I just tried with three different remotes - and alas, I can't see a thing, no matter how hard I try. All three give very bright flash when viewed via my Mac's camera (just launching Facetime with no call and pointing the remote to it).
FWIW, from his Twitter profile [1]:
Astronaut, part-time dad, professional voice actor, F1 driver, liar.