Reusable Payment Codes (RPC) are a special way to create bitcoin addresses that can be reused without compromising your financial history, providing bitcoin users with a way to publish payment addresses to the public and keep their transaction history private. In a new demo video from the wallet developers, they walk you through a transaction using a reusable payment code.
Read more: http://bitcoinx.io/news/articles/see-a- ... emo-video/