[null and void]

Perhaps using light, or even some phenomena that we're not familiar with yet.

Quantum entanglement, Einstein's spooky action at a distance.

Why would anyone use electromagnetic waves, be they light, RF or x-rays? They are pokey slow and any munchkin with an antenna can tap in for free.

Use entangled pairs, one at the transmitter and one roving. Every subscriber has a half pair hooked up, don't pay you bill and they unplug your half pair from the signal, just like cable TV.

Hyper secure, only your half pair gets that signal.

Instantaneous even across interstellar distances.

[Kip Russell]

Use entangled pairs, one at the transmitter and one roving. Every subscriber has a half pair hooked up, don't pay you bill and they unplug your half pair from the signal, just like cable TV. Hyper secure, only your half pair gets that signal. Instantaneous even across interstellar distances.

As per quantum information theory, quantum entanglement can't be used to transmit information:

http://en.wikipedia.org/wiki/No-communication_theorem

[FredZarguna]

You can’t transmit information at superluminal velocities with quantum entanglement.

[Windflier]

Quantum entanglement, Einstein's spooky action at a distance. Instantaneous even across interstellar distances.

Now why didn't I think of that? I'll race ya to the patent office! LOL

Actually, I think you're onto something with that. Makes perfect sense.

[FredZarguna]

I know you guys don't like to hear this, but I'll keep saying it until you try to understand: nothing which has a material effect -- including the transmission of information -- can move faster than the speed of light.

You cannot transmit information via quantum entanglement.

If you could transmit information faster than the speed of light, the receiver would obtain the signal in the past, he could then act on the information in your reference frame before it occurred -- and this would lead to causality violations.

It doesn't happen.