Unsurprisingly, the security comes a cost; a SiMKo smartphone costs between €1,700 (US$2,350) and €2,500. Also, export of the devices has to be approved by the German government. Once a company has invested in SiMKo devices, Deutsche Telekom works with it to harden the underlying infrastructure.
"It makes no sense to sell a crypto device and have very open infrastructure in the background," said Deutsche Telekom's Rainer Knirsch.
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