Re: Using lasers to communicate

If you have a secure link you don't need encryption. Arguably, the converse is true; if you have secure encryption you don't need a secure link. Isn't the ability to transmit secure data over insecure channels one of the primary justifications for encryption?

Of course. My point, though I seem to have failed to state it, is that encryption is a cheap software thing while laser beams are expensive, complicated, and still not secure.