The market is a lucrative one: Another company, Secusmart, has won over several government organizations in recent years with a BlackBerry smartphone equipped with a microSD encryption module. The combination, costing around €2,000 (US$2,250), is approved by the German government to carry Restricted-level voice and data traffic. Restricted is one of the lowest ratings for government secrets.
Sectra and Secusmart both use additional hardware in the form of a microSD card to assist in the encryption process and to protect encryption keys. While Secusmart’s system will encrypt calls and data stored on the phone, Sectra’s encrypts only voice traffic and text messages.