There is a continuous voice and data communication during a phone call; the packets are switched by many nodes of the infrastructure of providers. These nodes and provider networks are almost not secured, which makes it very easy for hackers and providers to intercept phone calls and to use the information for espionage and commercial purposes
To prevent interception Compumatica developed the CompuMobile solution. You can extend your existing smartphone to a phone which can be used for secure calling, secure SMS and secure messaging. CompuMobile is a software application in combination with a secure MicroSD card. The application will be installed from the MicroSD card and works on Android and BlackBerry smartphones. CompuMobile encrypts your phone call by using modern encryption methods. CompuMobile is a total security solution that consists of three components: The Secure MicroSD card, an own VoIP server, plus a Key Management System