Phil Zimmerman, the inventor of Pretty Good Privacy (PGP), has released a new system for secure communications, called Silent Circle. For $20 per month, the service is provided through a mobile app for iOS and Android. It allows you to decrypt and encrypt email, voice, text, and VOIP transmissions to and from your device.
When two Silent Circle users talk to one another all of their communications is fully encrypted, with “absolutely no backdoors.” Zimmerman points out that the encryption keys are always with the user, and never hosted on the company’s servers, which are located in Canada.
Link: Silent Circle