The NSA have released details of a top-secret encrypted digital telephony system, used by the Allies in WW2. The system used two turntables to hold the encryption key on vinyl records, synchronised with a clock two orders of magnitude more accurate than a modern consumer CD player. Some implementation details are still missing, though (such as the sampling rate used, the speed and capacity of the vinyl records, &c); though nonetheless, this is rather impressive.

Want to say something? Do so here.

Note to spammers: This comment system applies the rel=nofollow attribute to the poster's URL and all links. Posting links to this page will not improve their search engine rankings.

Display name:
URL:(optional)
To prove that you are not a bot, please enter the text in the image on the right in the field below it.

Your Comment:

Remember my details.

Please keep comments on topic and to the point. Inappropriate comments may be deleted.

Note that markup is stripped from comments; URLs will be automatically converted into links.