Neutrino Comms With Submarines?

Here's an article about an idea that won't come to fruition for several hundred years: using neutrinos to communicate with submarines.

When you consider that any such communications would have to be encrypted (since they'd be sent worldwide), I really don't see any way this would be feasible with the low data rates they're talking about as anything but a bell-ringer, which we already have with ELF.