Can't we use AppleTalk over IR for wireless comms with lasers?
Well, NASA recently used lasers to transmit a video over about 19 million miles, and the latency was only a bit under 2 minutes, so it should be possible, and latency for a few thousand miles should be relatively trivial.
IR requires a direct line-of-sight, though, so one would need many relays to make it across the Atlantic.
However, don't fiber optic cables operate on this principle already?
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