At around €2,000 (US$2800) each, the secure smartphones that SecuSmart showed at Cebit last year were out of reach of many businesses — although three governments have since bought them to secure mobile phone calls between senior officials, according to CEO Hans-Christoph Quelle. Now the company has developed a less expensive and more flexible system intended for the enterprise, and has extended the reach of its mobile system to secure VOIP calls on desktop phones.

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