[marshray]

I've heard it said that such systems may be used by militaries, where they have an organizational structure naturally-suited to large keystream distribution.

Unlike e-commerce, it's no problem to physically send the proverbial officer handcuffed to a briefcase to the nuclear submarine before it submerges for 6 months.

Also the messages to be secured are, um, short and... infrequent.

[JKCalhoun]

I kind of assumed the "customer" here would in fact be government agencies…